vendor/autoload.php

.gitignore

@@ -1,2 +1 @@
-vendor/
 node_modules/

composer.lock

@@ -0,0 +1,169 @@
+{
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
+        "This file is @generated automatically"
+    ],
+    "content-hash": "4dab38fa2dcb106e4f136a0273e46552",
+    "packages": [
+        {
+            "name": "abuyoyo/adminmenupage",
+            "version": "0.20",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/abuyoyo/AdminMenuPage.git",
+                "reference": "07d98f2c1f0b71340aaf0fae0783dfecec201e97"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/abuyoyo/AdminMenuPage/zipball/07d98f2c1f0b71340aaf0fae0783dfecec201e97",
+                "reference": "07d98f2c1f0b71340aaf0fae0783dfecec201e97",
+                "shasum": ""
+            },
+            "suggest": {
+                "abuyoyo/plugincore": "~0.18",
+                "cmb2/cmb2": "~2.9"
+            },
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "wph_admin_page.php"
+                ],
+                "psr-4": {
+                    "WPHelper\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "description": "WordPress admin menu page helper class",
+            "support": {
+                "issues": "https://github.com/abuyoyo/AdminMenuPage/issues",
+                "source": "https://github.com/abuyoyo/AdminMenuPage/tree/0.20"
+            },
+            "time": "2022-07-28T22:56:37+00:00"
+        },
+        {
+            "name": "abuyoyo/plugincore",
+            "version": "0.20",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/abuyoyo/PluginCore.git",
+                "reference": "0f8de7be654880adc850610f045f22cd7923c3cc"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/abuyoyo/PluginCore/zipball/0f8de7be654880adc850610f045f22cd7923c3cc",
+                "reference": "0f8de7be654880adc850610f045f22cd7923c3cc",
+                "shasum": ""
+            },
+            "require": {
+                "abuyoyo/adminmenupage": "~0.20",
+                "yahnis-elsts/plugin-update-checker": "~4.12"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "WPHelper\\": ""
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "description": "WordPress plugin core helper class",
+            "support": {
+                "issues": "https://github.com/abuyoyo/PluginCore/issues",
+                "source": "https://github.com/abuyoyo/PluginCore/tree/0.20"
+            },
+            "time": "2022-07-29T00:00:00+00:00"
+        },
+        {
+            "name": "abuyoyo/screen-meta-links",
+            "version": "0.11",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/abuyoyo/screen-meta-links.git",
+                "reference": "04e3c892f0c6095b4c31a489e06336f0917128d3"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/abuyoyo/screen-meta-links/zipball/04e3c892f0c6095b4c31a489e06336f0917128d3",
+                "reference": "04e3c892f0c6095b4c31a489e06336f0917128d3",
+                "shasum": ""
+            },
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "screen-meta-links.php"
+                ]
+            },
+            "description": "API for adding custom screen-meta-links alongside the 'Screen Options' and 'Help' links.",
+            "support": {
+                "source": "https://github.com/abuyoyo/screen-meta-links/tree/0.11",
+                "issues": "https://github.com/abuyoyo/screen-meta-links/issues"
+            },
+            "time": "2022-05-18T01:18:24+00:00"
+        },
+        {
+            "name": "yahnis-elsts/plugin-update-checker",
+            "version": "v4.13",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/YahnisElsts/plugin-update-checker.git",
+                "reference": "6eb27a6911e0e0880d09e5b11f577d3f688f7da7"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/YahnisElsts/plugin-update-checker/zipball/6eb27a6911e0e0880d09e5b11f577d3f688f7da7",
+                "reference": "6eb27a6911e0e0880d09e5b11f577d3f688f7da7",
+                "shasum": ""
+            },
+            "require": {
+                "ext-json": "*",
+                "php": ">=5.2.0"
+            },
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "load-v4p13.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Yahnis Elsts",
+                    "email": "whiteshadow@w-shadow.com",
+                    "homepage": "http://w-shadow.com/",
+                    "role": "Developer"
+                }
+            ],
+            "description": "A custom update checker for WordPress plugins and themes. Useful if you can't host your plugin in the official WP repository but still want it to support automatic updates.",
+            "homepage": "https://github.com/YahnisElsts/plugin-update-checker/",
+            "keywords": [
+                "automatic updates",
+                "plugin updates",
+                "theme updates",
+                "wordpress"
+            ],
+            "support": {
+                "issues": "https://github.com/YahnisElsts/plugin-update-checker/issues",
+                "source": "https://github.com/YahnisElsts/plugin-update-checker/tree/v4.13"
+            },
+            "time": "2022-07-29T12:36:25+00:00"
+        }
+    ],
+    "packages-dev": [],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": [],
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": [],
+    "platform-dev": [],
+    "plugin-api-version": "2.1.0"
+}

notice-manager.php

@@ -12,6 +12,8 @@ defined( 'ABSPATH' ) || die( 'No soup for you!' );
 
 use WPHelper\PluginCore;
 
+require_once 'vendor/autoload.php';
+
 /**
  * Bootstrap plugin and admin page (Tools > Notice Manager)
  */

vendor/abuyoyo/adminmenupage/CHANGELOG.md

@@ -0,0 +1,143 @@
+# Changelog
+WPHelper\AdminMenuPage
+
+## 0.20
+
+### Added
+- Add SettingsPage section option `desciption-container`. Accepts `card` div, `notice`, `notice-info` and `none`.
+- Sanitize SettingsPage text, url and email fields.
+
+## 0.19
+
+### Added
+- SettingsPage supports `text`, `url`, `email` fields.
+- CMB2_OptionsPage supports all admin menu top-level slugs.
+
+### Fixed
+- Fixed PHP fatal error: cannot redeclare function `wph_extra_plugin_headers()`.
+
+### Changed
+- If CMB2 plugin is not activated - show missing plugin card on `cmb2` and `cmb2-tabs` pages.
+
+## 0.18
+
+### Added
+
+- Add `wrap` parameter to output WordPress admin `.wrap` template. Accepts `simple` and `sidebar`.
+- Accept `plugin_info = true` to output default plugin info meta box and wrap.
+- Add `Last Update` and `Release Date` optional headers to WordPress theme headers (Used in plugin info-box).
+
+### Changed
+- All classes are pluggable.
+- Prevent direct access if not withing WordPress environment.
+
+## 0.17
+
+### Changed
+
+- Various improvements to CMB2 settings pages.
+- Make use of CMB2 2.9.0's `options_page_tab_nav_output()` to render tabs on non-CMB2 pages.
+- Plugins can provide their own plugin info-box render callback.
+- Parent item's first sub-menu page (itself) uses item's `tab_title` instead of `menu_title`
+
+### Added
+- Add action `wphelper/adminpage/plugin_info_box/$slug` to render plugin info-box.
+- Add `Last Update` and `Release Date` optional headers to WordPress plugin headers (Used in plugin info-box).
+
+## 0.16
+
+### Fixed
+
+- Fix CMB2 "multi" options page to actually override fields.
+
+### Changed
+
+- Add CMB2 fields directly in options array instead of using `add_field` method.
+
+## 0.15
+
+### Changed
+
+- Restore deprecated param to SettingsPage constructor and add `_deprecated_argument` message.
+
+## 0.14
+
+### Added
+
+- Add CMB2 Options-page delegation. Allows adding CMB2 options page.
+- Add CMB2 Options "multi" page. Allows CMB2 options page that saves each field to its own row in options table.
+- Supports CMB2 tabs in CMB2 option-pages.
+- Add Plugin Info metabox to CMB2 tables.
+
+### Changed
+
+- Deprecate `AdminPage->setup` - add `_doing_it_wrong` message.
+- Admin Page method `bootstrap()` runs on `init` hook instead of constructor. Allows setter functions to have effect.
+
+## 0.13
+
+### Added
+
+- Add `methods` option to load functions on `load-{hook_suffix}` hook.
+- Add `get_hook_suffix()` getter method (`hook_suffix` variable is no longer public).
+
+## v0.12
+
+### Changed
+
+- New `AdminPage` class.
+- Deprecate class `AdminMenuPage` in favor of `AdminPage`.
+- Restructure source files.
+
+## v0.11
+
+### Added
+
+- Setting Page - class and template for registering WordPress settings page.
+- Options_Menu - use WordPress core `add_options_page` to register page.
+
+### Changed
+
+- No longer require call to `setup()` method. Bootstrap into WordPress from constructor method.
+
+## v0.10
+
+### Added
+
+- Styles - enqueue styles to registered admin page
+
+## v0.9
+
+### Changed
+
+- Don't use extract() in constructor
+- Use setter methods for all variables
+
+### Fixed
+
+- Fix PHP notices: undefined property
+
+## v0.8
+
+### Fixed
+
+- Removed calls to AdminNotice causing errors.
+
+## v0.7
+
+### Fixed
+
+- Fixed error when no scripts are added
+
+### Changed
+
+- Accept `render_cb` and `render_tpl` args. Use `render` method instead of `template`
+- Print default template if no callback or template provided
+
+## v0.6
+
+### Added
+
+- Initial public release
+- Register and print top-level or submenu pages to WordPress admin menu
+- Enqueue scripts to registered admin page

vendor/abuyoyo/adminmenupage/LICENSE

@@ -0,0 +1,29 @@
+BSD 3-Clause License
+
+Copyright (c) 2019, abuyoyo
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/abuyoyo/adminmenupage/README.md

@@ -0,0 +1,54 @@
+# WPHelper \ AdminMenuPage
+
+> Helper class for simple admin menu page registration in WordPress.
+
+## Requirements
+* PHP >= 7.4
+* [Composer](https://getcomposer.org/)
+* [WordPress](https://wordpress.org)
+
+## Installation
+
+Install with [Composer](https://getcomposer.org/) as a library.
+
+```PHP
+// Require the Composer autoloader anywhere in your code.
+require __DIR__ . '/vendor/autoload.php';
+
+```
+
+WPHelper\AdminMenuPage uses [PSR-4](https://www.php-fig.org/psr/psr-4/) to autoload.
+
+OR 
+
+Install as WordPress plugin and activate.
+
+## Basic Usage
+
+```PHP
+// Import AdminPage.
+use WPHelper\AdminPage;
+
+// Register the admin menu page.
+$args = [
+    'title' => 'The Tile of My Page', // title - passed to add_menu_page
+    'menu_title' => 'Page Title', // menu_title - passed to add_menu_page (optional - will use title if none provided)
+    'capability' => 'manage_options', // capability - passed to add_menu_page (optional - will default to 'manage_options')
+    'slug' => 'my_page', // slug - passed to add_menu_page
+    'template' => 'tpl/my_admin_page.php', // template - include file to print the page. wrapped in callback and passed to add_menu_page
+    'parent' => 'parent_page_slug'; // optional - slug of parent page if creating submenu
+    'icon_url' => $icon_url; // optional - icon url passed to add_menu_page/add_submenu_page
+    'position' => 4; // optional - passed to add_menu_page
+    'scripts' => [ // optional - script parameters passed to enqueue_scripts. Will only enqueue scripts on admin page
+        [ 'script_handle', 'js/myscript.js', ['jquery'], false, true ],
+        [ 'another_script', 'js/my_other_script.js', ['jquery', 'script_handle'], false, true ]
+    ];
+];
+
+// Register the admin menu page.
+$admin_menu_page = new AdminPage( $args );
+$admin_menu_page->setup();
+
+// That's it. We're done.
+// This function can be called from anywhere. No need to wrap in any hook.
+```

vendor/abuyoyo/adminmenupage/composer.json

@@ -0,0 +1,19 @@
+{
+	"name": "abuyoyo/adminmenupage",
+	"description": "WordPress admin menu page helper class",
+	"type": "library",
+	"version": "0.20",
+	"license": "BSD-3-Clause",
+	"suggest": {
+		"abuyoyo/plugincore": "~0.18",
+		"cmb2/cmb2": "~2.9"
+	},
+	"autoload": {
+		"psr-4": {
+			"WPHelper\\" : "src/"
+		},
+		"files": [
+			"wph_admin_page.php"
+		]
+	}
+}

vendor/abuyoyo/adminmenupage/src/AdminMenuPage.php

@@ -0,0 +1,19 @@
+<?php
+namespace WPHelper;
+
+defined( 'ABSPATH' ) || die( 'No soup for you!' );
+
+if ( ! class_exists( 'WPHelper\AdminMenuPage' ) ):
+/**
+ * AdminMenuPage
+ * 
+ * Deprecated class. Use AdminPage instead.
+ * 
+ * @author  abuyoyo
+ * @since 0.12
+ * 
+ */
+class AdminMenuPage extends AdminPage{
+
+}
+endif;

vendor/abuyoyo/adminmenupage/src/AdminPage.php

@@ -0,0 +1,911 @@
+<?php
+namespace WPHelper;
+
+defined( 'ABSPATH' ) || die( 'No soup for you!' );
+
+use function add_menu_page;
+use function add_options_page;
+use function add_submenu_page;
+
+if ( ! class_exists( 'WPHelper\AdminPage' ) ):
+/**
+ * AdminPage
+ * 
+ * Helper class
+ * Create WordPress admin pages easily
+ * 
+ * @todo add 'menu_location' - settings. tools, toplevel etc. (extend 'parent' option)
+ * @todo add add_screen_option( 'per_page', $args );
+ * @todo accept WPHelper\PluginCore instance (get title slug etc. from there)
+ * @todo fix is_readable() PHP error when sending callback array
+ * @todo is_readable() + is_callable() called twice - on register and on render
+ */
+class AdminPage
+{
+	/**
+	 * Title displayed on page.
+	 *
+	 * @var string
+	 */
+	protected $title;
+
+	/**
+	 * Title displayed in menu.
+	 *
+	 * @var string
+	 */
+	protected $menu_title;
+
+	/**
+	 * User capabailty required to view page.
+	 *
+	 * @var string
+	 */
+	protected $capability;
+
+	/**
+	 * Menu slug.
+	 *
+	 * @var string
+	 */
+	protected $slug;
+
+	/**
+	 * Path to the admin page templates.
+	 *
+	 * @var string
+	 */
+	protected $template;
+
+	/**
+	 * Parent slug if submenu.
+	 *
+	 * @var string
+	 */
+	protected $parent;
+
+	/**
+	 * Icon to use in menu.
+	 *
+	 * @var string
+	 */
+	protected $icon_url;
+
+	/**
+	 * Position in menu.
+	 *
+	 * @var int
+	 */
+	protected $position;
+
+	/**
+	 * Render Type (callback, template, settings-page, cmb2-page etc.)
+	 *
+	 * @var string
+	 */
+	protected $render;
+
+	/**
+	 * Render callback function.
+	 *
+	 * @var callable
+	 */
+	protected $render_cb;
+
+	/**
+	 * Render template file
+	 *
+	 * @var string filename
+	 */
+	protected $render_tpl;
+
+	/**
+	 * Should library print WordPress 'wrap'
+	 *
+	 * @var string wrap type
+	 */
+	protected $wrap;
+
+	/**
+	 * Render callback function.
+	 *
+	 * @var callable | boolean
+	 */
+	protected $plugin_info;
+
+	/**
+	 * Scripts
+	 *
+	 * @var array[] arrays of script arguments passed to wp_enqueue_script()
+	 */
+	protected $scripts;
+
+	/**
+	 * Styles
+	 *
+	 * @var array[] arrays of script arguments passed to wp_enqueue_style()
+	 */
+	protected $styles;
+
+    /**
+     * Methods
+     *
+     * @var Callable[] arrays of Callbale methods to hook on `load-{$hook_suffix}` 
+     */
+	protected $methods = [];
+
+	/**
+	* Hook suffix provided by WordPress when registering menu page.
+	*
+	* @var string
+	*/
+	protected $hook_suffix;
+
+	/**
+	 * PluginCore instance
+	 *
+	 * @var PluginCore
+	 */
+	protected $plugin_core;
+
+	/**
+	 * Settings Page
+	 *
+	 * @var SettingsPage
+	 */
+	protected $settings_page;
+
+	/**
+	 * Delegate admin_menu hookup to CMB2 implementation
+	 *
+	 * @var boolean
+	 */
+	protected $delegate_hookup = false;
+
+	/**
+	 * Constructor.
+	 *
+	 * @param array $options
+	 */
+	public function __construct($options)
+	{
+
+		$options = (object) $options;
+
+		/**
+		 * @todo - fallback to plugin_core on missing options (title, etc.) in bootstrap()
+		 */
+		if ( isset( $options->plugin_core ) )
+			$this->plugin_core( $options->plugin_core );
+
+		if ( isset( $options->title ) )
+			$this->title( $options->title );
+
+		/**
+		 * @todo move this to bootstrap()
+		 */
+		if ( ! isset( $options->menu_title ) )
+			$options->menu_title = $options->title;
+
+		if ( isset( $options->menu_title ) )
+			$this->menu_title( $options->menu_title );
+
+		if ( isset( $options->capability ) )
+			$this->capability( $options->capability );
+
+		if ( isset( $options->slug ) )
+			$this->slug( $options->slug );
+
+		if ( isset( $options->plugin_info ) ){ // before render()
+			$this->plugin_info( $options->plugin_info );
+		}
+
+		if ( isset( $options->wrap ) ){ // before render()
+			$this->wrap( $options->wrap );
+		}
+
+		if ( isset( $options->render ) ) // dev
+			$this->render( $options->render );
+
+		if ( isset( $options->render_cb ) ) // dev - deprecate?
+			$this->render_cb( $options->render_cb );
+
+		if ( isset( $options->render_tpl ) ) // dev - deprecate?
+			$this->render_tpl( $options->render_tpl );
+
+		if (true)
+			$this->render(); // render anyway - will use default tpl if render is empty
+
+		if (true)
+			$this->wrap(); // set wrap anyway - will set to 'none' if empty
+
+		if ( isset( $options->parent ) )
+			$this->parent( $options->parent );
+
+		if ( isset( $options->icon_url ) )
+			$this->icon_url( $options->icon_url );
+
+		if ( isset( $options->position ) )
+			$this->position( $options->position );
+
+		if ( isset( $options->scripts ) )
+			$this->scripts( $options->scripts );
+
+		if ( isset( $options->styles ) )
+			$this->styles( $options->styles );
+
+		if ( isset( $options->methods ) )
+			$this->methods( $options->methods );
+
+		if ( isset( $options->settings ) )
+			$this->settings( $options->settings );
+
+		/**
+		 * Bootstrap on init. Do not call directly from constructor.
+		 * That way setter functions can be called after instance is created.
+		 */
+		add_action( 'init', [ $this, 'bootstrap' ] );
+	}
+
+	/**
+	 * Setter - title
+	 * WordPress admin menu param
+	 * 
+	 * @access private
+	 */
+	private function title( $title ) {
+		$this->title = $title;
+	}
+
+	/**
+	 * Setter - menu_title
+	 * WordPress admin menu param
+	 * 
+	 * @access private
+	 */
+	private function menu_title( $menu_title ) {
+		$this->menu_title = $menu_title;
+	}
+
+	/**
+	 * Setter - capability
+	 * WordPress admin menu param
+	 * 
+	 * @access private
+	 */
+	private function capability( $capability ) {
+		$this->capability = $capability;
+	}
+
+	/**
+	 * Setter - slug
+	 * WordPress admin menu param
+	 * 
+	 * @access private
+	 */
+	private function slug( $slug ) {
+		$this->slug = $slug;
+	}
+
+	/**
+	 * Setter - parent
+	 * WordPress admin menu param
+	 * 
+	 * @access private
+	 */
+	private function parent( $parent ) {
+		switch( $parent ) {
+			case 'options':
+			case 'settings':
+			case 'options-general.php':
+				$this->parent = 'options-general.php';
+			break;
+			default:
+				$this->parent = $parent;
+			break;
+		}
+	}
+
+	/**
+	 * Setter - icon_url
+	 * WordPress admin menu param
+	 * 
+	 * @access private
+	 */
+	private function icon_url( $icon_url ) {
+		$this->icon_url = $icon_url;
+	}
+
+	
+	/**
+	 * Setter - position
+	 * WordPress admin menu param
+	 * 
+	 * @access private
+	 */
+	private function position( $position ) {
+		$this->position = $position;
+	}
+
+	/**
+	 * Setter - render
+	 * Sets render cb or tpl
+	 * 
+	 * accepts:
+	 *     presets: 'settings-page', 'cmb2', 'cmb2-tabs', 'render_cb', 'render_tpl'
+	 *     callback: A callable function that prints page.
+	 *     readable: A template file
+	 * 
+	 * @access private
+	 */
+	private function render( $render=null ) {
+		if ( 'settings-page' == $render ) {
+			$this->render_tpl( __DIR__ . '/tpl/settings-form.php' );
+			$this->render = $this->render ?? $render; // 'settings-page'
+		} else if ( 'cmb2' == $render || 'cmb2-tabs' == $render ) {
+
+			// validate
+			if ( ! defined( 'CMB2_LOADED' ) ){
+				$this->render_tpl( __DIR__ . '/tpl/cmb2-unavailable.php' );
+				$this->render = $this->render ?? 'render_tpl';
+			} else {
+				$this->delegate_hookup = true;
+
+				if ( ! empty( $this->plugin_core ) || ! empty( $this->plugin_info ) ){
+					$this->render_tpl( __DIR__ . '/tpl/cmb2_options_page-plugin_info.php' );
+				} else {
+					$this->render_tpl( __DIR__ . '/tpl/cmb2_options_page.php' );
+				}
+
+				$this->render = $this->render ?? $render; // 'cmb2' || 'cmb2-tabs'
+			}
+
+		} else if( is_callable( $render ) ) {
+			$this->render_cb( $render );
+			$this->render = $this->render ?? 'render_cb';
+		} else if ( is_readable( $render ) ) {
+			$this->render_tpl( $render );
+			$this->render = $this->render ?? 'render_tpl';
+		} else {
+			$this->render_tpl( __DIR__ . '/tpl/default.php' );
+			$this->render = $this->render ?? 'render_tpl';
+		}
+	}
+
+	/**
+	 * Setter - render_cb
+	 * 
+	 * if $this->render == 'render_cb'
+	 * set callback funtion in $this->render_cb
+	 * 
+	 * @access private
+	 */
+	private function render_cb($render_cb){
+
+		// we already have it
+		if ( $this->render_cb )
+			return;
+
+		if( is_callable( $render_cb ) )
+			$this->render_cb = $render_cb;
+
+	}
+
+	/**
+	 * Setter - render_tpl
+	 * 
+	 * if $this->render == 'render_tpl'
+	 * save template filename to $this->render_tpl
+	 * 
+	 * @access private
+	 */
+	private function render_tpl($render_tpl){
+
+		// we already have it
+		if ($this->render_tpl)
+			return;
+
+		if( is_readable( $render_tpl ) )
+			$this->render_tpl = $render_tpl;
+
+	}
+
+	/**
+	 * Setter - wrap
+	 * 
+	 * Set wrap type.
+	 * Default: none
+	 * 
+	 * @access private
+	 */
+	private function wrap($wrap=null){
+
+		// we already have it
+		if ($this->wrap)
+			return;
+
+		if ( ! empty($wrap) ){
+			$this->wrap = 'simple';
+		} else {
+			$this->wrap = 'none';
+		}
+
+		if ( 'sidebar' == $wrap ){
+			$this->wrap = 'sidebar';
+		}
+
+		// if plugin_info == true we set to sidebar regardless of passed $wrap parameter
+		if ( ! empty($this->plugin_info) ){
+			$this->wrap = 'sidebar';
+		}
+
+		if ( 'settings-page' == $this->render ){
+			if ( empty($this->plugin_info) ){
+				$this->wrap = 'simple';
+			}
+		}
+
+	}
+
+	/**
+	 * Setter - plugin_info
+	 * 
+	 * accepts:
+	 *     callable: Function that prints plugin info box
+	 *     boolean true (or non-empty value): print default 
+	 * 
+	 * @access private
+	 */
+	private function plugin_info( $plugin_info ){
+
+		// we already have it
+		if ( $this->plugin_info )
+			return;
+
+		if( is_callable( $plugin_info ) )
+			$this->plugin_info = $plugin_info;
+
+		// if true-y value passed and PluginCore class exists - set to true
+		else if (!empty($plugin_info) && class_exists('WPHelper\PluginCore'))
+			$this->plugin_info = true;
+	}
+
+	/**
+	 * Setter - scripts
+	 * Scripts to enqueue on admin page
+	 * 
+	 * @access private
+	 */
+	private function scripts($scripts){
+		$this->scripts = $scripts;
+	}
+
+	/**
+	 * Setter - styles
+	 * Styles to enqueue on admin page
+	 * 
+	 * @access private
+	 */
+	private function styles($styles){
+		$this->styles = $styles;
+	}
+
+	/**
+	 * Setter - methods
+	 * Callables to run on 'load-{$hook_suffix}'
+	 * 
+	 * @access private
+	 */
+	function methods($methods){
+		$this->methods = $methods;
+	}
+
+	function plugin_core($plugin_core){
+		if ( is_a( $plugin_core, 'WPHelper\PluginCore') ){
+			$this->plugin_core = $plugin_core;
+		}
+	}
+
+	function settings($settings){
+		$this->settings = $settings;
+	}
+
+	/**
+	 * Getter - Options
+	 * Array representation of $this object.
+	 * 
+	 * @return array options
+	 * 
+	 * @todo add new properties (like plugin_info)
+	 */
+	public function options(){
+		$options = [
+			'title' => $this->title,
+			'menu_title' => $this->menu_title,
+			'capability' => $this->capability,
+			'slug' => $this->slug,
+			'parent' => $this->parent,
+			'icon_url' => $this->icon_url,
+			'position' => $this->position,
+			'render' => $this->render, // render_cb | render_tpl | settings-page | cmb2 | cmb2-tabs
+			'render_cb' => $this->render_cb,
+			'render_tpl' => $this->render_tpl,
+			'settings' => $this->settings,
+			'plugin_core' => $this->plugin_core,
+		];
+
+		return $options;
+	}
+
+	/**
+	 * REGISTER MENU - NOOP/DEPRECATE NOTICE
+	 * 
+	 * Empty function. Kept here for backward-compatibility purposes.
+	 * 
+	 * All setup operations are now made in the constructor. This function is empty and will be deprecated.
+	 * 
+	 * This runs for all registers
+	 * hook_suffix not defined yet
+	 * 
+	 * inside WPHelper namespace
+	 * \get_current_screen() function not defined
+	 * \current_action() also????
+	 */
+	function setup(){
+		_doing_it_wrong( __METHOD__, 'Deprecated. Noop/no-op. This function will be removed in v1.0', '0.14' );
+	}
+
+	/**
+	 * Set default user capability if none provided
+	 * 
+	 * Finish constructing object after all info is available
+	 * 
+	 * @hook 'init'
+	 * @access private
+	 * 
+	 * @return void
+	 */
+	public function bootstrap(){
+
+		if ( ! $this->capability )
+			$this->capability = 'manage_options';
+
+		if ( $this->render == 'settings-page' ){
+
+			$this->settings_page = new SettingsPage($this);
+			$this->settings_page->setup();
+
+		}
+
+		add_action( "wphelper/adminpage/plugin_info_box/{$this->slug}" , [ $this , 'render_plugin_info_box' ] );
+
+		// if ( $this->delegate_hookup ){
+		if ( 'cmb2' == $this->render || 'cmb2-tabs' == $this->render ){
+
+			if ( isset( $this->settings['options_type'] ) && $this->settings['options_type'] == 'multi' ) {
+				$this->cmb2_page = new CMB2_OptionsPage_Multi( $this );
+			} else {
+				$this->cmb2_page = new CMB2_OptionsPage( $this );
+			}
+			
+			/**
+			 * @todo Perhpaps this can hook on admin_init - right after admin_menu has finished
+			 * @todo CMB2 options-page does not return page_hook/hook_suffix - MUST validate
+			 */
+			add_action ( 'admin_menu' , [ $this , '_bootstrap_admin_page' ], 12 );
+
+			// skip add_menu_page
+			return;
+		}
+
+		// if ( ! $this->delegate_hookup ){
+		add_action ( 'admin_menu' , [ $this , 'add_menu_page' ], 11 );
+		add_action ( 'admin_menu' , [ $this , '_bootstrap_admin_page' ], 12 );
+
+	}
+
+	/**
+	 * Add WordPress toplevel or submenu page
+	 */
+	public function add_menu_page(){
+
+		switch ( $this->parent ){
+			case null:
+			case '':
+				$this->hook_suffix = add_menu_page(
+					$this->title,
+					$this->menu_title,
+					$this->capability,
+					$this->slug,
+					[ $this , 'render_admin_page' ],
+					$this->icon_url,
+					$this->position
+				);
+				break;
+			case 'options':
+			case 'settings':
+			case 'options-general.php':
+				$this->hook_suffix = add_options_page(
+					$this->title,
+					$this->menu_title,
+					$this->capability,
+					$this->slug,
+					[ $this , 'render_admin_page' ]
+				);
+				break;
+			default:
+				$this->hook_suffix = add_submenu_page(
+					$this->parent,
+					$this->title,
+					$this->menu_title,
+					$this->capability,
+					$this->slug,
+					[ $this , 'render_admin_page' ]
+				);
+				break;
+		}
+
+	}
+
+
+	/**
+	 * 
+	 */
+	public function validate_page_hook(){
+
+		/**
+		 * hack!
+		 * This is ad hoc validation - should do this earlier
+		 */
+		if ( empty( $this->slug ) ){
+			$this->slug = $this->settings['option_key'];
+		}
+
+		if ( empty( $this->hook_suffix ) ){
+			$this->hook_suffix = get_plugin_page_hookname( $this->slug, $this->parent );
+		}
+
+	}
+
+	/**
+	 * REGISTER ADMIN PAGE
+	 * 
+	 * hook_suffix is KNOWN
+	 * get_current_screen() is NOT
+	 * 
+	 * Runs for EVERY AdminPage instance
+	 * AdminNotice->onPage() works
+	 * 
+	 * @hook admin_menu priority 12
+	 * @access private
+	 * 
+	 * @todo move this function to admin_init - after admin_menu has finished
+	 */
+	public function _bootstrap_admin_page(){
+
+		/**
+		 * @todo perhaps run this on 'admin_init'
+		 */
+		$this->validate_page_hook();
+
+		add_action ( 'load-' . $this->hook_suffix , [ $this , '_admin_page_setup' ] );
+
+		foreach ( $this->methods as $method ){
+			if( is_callable( $method ) ){
+				add_action ( 'load-' . $this->hook_suffix , $method );
+			}
+		}
+	}
+
+	/**
+	 * SHOW ADMIN PAGE
+	 * 
+	 * current_screen IS AVAILABLE
+	 * 
+	 * Only runs on actual screen showing
+	 * AdminNotice->onPage() redundant
+	 * 
+	 * @hook load-{$hook_suffix}
+	 * @access private
+	 */
+	public function _admin_page_setup(){
+
+		if ( $this->scripts )
+			add_action( 'admin_enqueue_scripts', [ $this, 'admin_enqueue_scripts' ] );
+
+		if ( $this->styles )
+			add_action( 'admin_enqueue_scripts', [ $this, 'admin_enqueue_styles' ] );
+	}
+
+	/**
+	 * admin_enqueue_scripts
+	 * Enqueue user-provided scripts on admin page.
+	 * 
+	 * @hook admin_enqueue_scripts
+	 * @access private
+	 */
+	public function admin_enqueue_scripts( $hook ) {
+
+		// redundant
+		// this only gets called on load-{$this->hook_suffix} anyway
+		if( $hook != $this->hook_suffix ) {
+			return;
+		}
+
+		if ( ! $this->scripts)
+			return;
+
+		foreach ( $this->scripts as $script_args ){
+			wp_enqueue_script( ...$script_args );
+		}
+
+	}
+
+	/**
+	 * admin_enqueue_styles
+	 * Enqueue user-provided styles on admin page.
+	 * 
+	 * @hook admin_enqueue_styles
+	 * @access private
+	 */
+	public function admin_enqueue_styles( $hook ) {
+
+		// redundant
+		// this only gets called on load-{$this->hook_suffix} anyway
+		if( $hook != $this->hook_suffix ) {
+			return;
+		}
+
+		if ( ! $this->styles)
+			return;
+
+		foreach ( $this->styles as $style_args ){
+			wp_enqueue_style( ...$style_args );
+		}
+
+	}
+
+	/**
+	 * Getter - capability
+	 * Get the capability required to view the admin page.
+	 *
+	 * @return string
+	 */
+	public function get_capability()
+	{
+		return $this->capabailty;
+	}
+
+	/**
+	 * Getter - menu_title
+	 * Get the title of the admin page in the WordPress admin menu.
+	 *
+	 * @return string
+	 */
+	public function get_menu_title()
+	{
+		return $this->menu_title;
+	}
+
+	/**
+	 * Getter - title
+	 * Get the title of the admin page.
+	 *
+	 * @return string
+	 */
+	public function get_title()
+	{
+		return $this->title;
+	}
+
+	/**
+	 * Getter - parent / parent_slug
+	 * Get the parent slug of the admin page.
+	 *
+	 * @return string
+	 */
+	public function get_parent_slug()
+	{
+		return $this->parent;
+	}
+
+	/**
+	 * Getter - hook_suffix
+	 * Get the hook suffix provided by WordPress when registering menu page..
+	 *
+	 * @return string
+	 * 
+	 * @todo Throw Exception|WP_Error if called before 'current_screen' hook.
+	 */
+	public function get_hook_suffix()
+	{
+		return $this->hook_suffix;
+	}
+
+	/**
+	 * Getter - slug
+	 * Get the slug used by the admin page.
+	 *
+	 * @return string
+	 */
+	public function get_slug()
+	{
+		return $this->slug;
+	}
+
+	/**
+	 * Getter - render_tpl
+	 * Get the render template.
+	 *
+	 * @return string
+	 */
+	public function get_render_tpl()
+	{
+		return $this->render_tpl;
+	}
+
+	/**
+	 * Render Admin Page
+	 * Render the top section of the plugin's admin page.
+	 * 
+	 * This callback function used as $callback parameter in add_menu_page()
+	 * 
+	 * @access public
+	 */
+	public function render_admin_page()
+	{
+		// @todo if render callback supplied - add shortcircuit hook here
+		// execute render callback and return early
+
+		if ( 'none' != $this->wrap ){
+			ob_start();
+		}
+
+		if ( isset( $this->render_cb ) && is_callable( $this->render_cb ) ) {
+			call_user_func( $this->render_cb );
+		} else if ( isset( $this->render_tpl ) && is_readable( $this->render_tpl ) ) {
+			include $this->render_tpl;
+		}
+
+		if ( 'none' != $this->wrap ){
+			$ob_content = ob_get_clean();
+
+			switch ( $this->wrap ){
+				case ( 'simple' ):
+					include 'tpl/wrap-simple.php';
+					break;
+				case ( 'sidebar' ):
+					include 'tpl/wrap-sidebar.php';
+					break;
+				default:
+					break;
+			}
+
+		}
+	}
+
+	/**
+	 * Render plugin info metabox
+	 * 
+	 * Call user-provided callable.
+	 * Or else attempt to create PluginInfoMetaBox class from $this->plugin_core and call its render function.
+	 * 
+	 * @access private?
+	 * 
+	 * @todo See if this function should be public API or only run on action hook
+	 * @todo deprecate public use - use wphelper/adminpage/plugin_info_box/{$this->slug} instead
+	 */
+	public function render_plugin_info_box(){
+
+		if ( isset( $this->plugin_info ) && is_callable( $this->plugin_info ) ) {
+			call_user_func( $this->plugin_info );
+		} else {
+			if ( ! empty( $this->plugin_core ) && empty( $this->plugin_info_meta_box ) ){
+				$this->plugin_info_meta_box = new PluginInfoMetaBox( $this->plugin_core );
+			}
+			$this->plugin_info_meta_box->plugin_info_box();
+		}
+
+	}
+}
+endif;

vendor/abuyoyo/adminmenupage/src/CMB2_OptionsPage.php

@@ -0,0 +1,243 @@
+<?php
+namespace WPHelper;
+
+defined( 'ABSPATH' ) || die( 'No soup for you!' );
+
+use CMB2;
+use CMB2_Options_Hook;
+
+if ( ! class_exists( 'WPHelper\CMB2_OptionsPage' ) ):
+/**
+ * CMB2_OptionsPage
+ * 
+ * Helper class
+ * Create WordPress Setting page using CMB2 Options Hookup.
+ * 
+ * @author  abuyoyo
+ * 
+ * @see CMB2_Options_Hookup::options_page_output and 'display_cb' - to manipulate tabs
+ * 
+ * @todo add 'submenu' field and functionality (rename first submenu item) to WPHelper\AdminPage
+ */
+class CMB2_OptionsPage{
+
+	/**
+	 * @var AdminPage $admin_page
+	 */
+	public $admin_page;
+
+	/**
+	 * @var CMB2 $cmb
+	 */
+	private $cmb;
+
+	/**
+	 * @param AdminPage $admin_page
+	 */
+	function __construct( $admin_page ){
+
+		$this->admin_page = $admin_page;
+
+		$admin_options = $this->admin_page->options();
+
+		$settings = $admin_options['settings'];
+
+		$settings['object_types'] = [ 'options-page' ];
+		$settings['display_cb'] ??= [ $this, 'options_page_output' ];
+
+		$settings['option_key']  ??= ( $settings['option_name'] ?? ( $settings['id'] ?? $admin_options['slug'] ) );
+		$settings['title']       ??= $admin_options['title'];
+		$settings['menu_title']  ??= $admin_options['menu_title'];
+		$settings['parent_slug'] ??= $admin_options['parent'];
+		$settings['position']    ??= $admin_options['position'];
+		$settings['icon_url']    ??= $admin_options['icon_url'];
+		$settings['capability']  ??= $admin_options['capability'];
+
+		/**
+		 * CMB2 must have admin menu page slug same as option key :(
+		 */
+		$settings['id'] = $settings['option_key'];
+		
+		unset( $settings['option_name'] );
+
+		/**
+		 * CMB2 only accepts url slug
+		 * 
+		 * @todo export parent_slug convertion to dedicated method
+		 */
+		switch ( $settings['parent_slug'] ) {
+			case 'dashboard':
+				$settings['parent_slug'] = 'index.php';
+				break;
+			case 'posts':
+				$settings['parent_slug'] = 'edit.php';
+				break;
+			case 'media':
+				$settings['parent_slug'] = 'upload.php';
+				break;
+			case 'pages':
+				$settings['parent_slug'] = 'edit.php?post_type=page';
+				break;
+			case 'comments':
+				$settings['parent_slug'] = 'edit-comments.php';
+				break;
+			case 'themes':
+			case 'appearance': // Official WordPress designation 
+				$settings['parent_slug'] = 'themes.php';
+				break;
+			case 'plugins':
+				$settings['parent_slug'] = 'plugins.php';
+				break;
+			case 'users':
+				$settings['parent_slug'] = 'users.php';
+				break;
+			case 'options':
+			case 'settings': // Official WordPress designation
+				$settings['parent_slug'] = 'options-general.php';
+				break;
+			case 'tools':
+				$settings['parent_slug'] = 'tools.php';
+				break;
+			case 'network':
+			case 'network_settings':
+				$settings['parent_slug'] = 'settings.php';
+				break;
+			case null:
+				break;
+			default:
+				if ( post_type_exists( $settings['parent_slug'] ) ){
+					$settings['parent_slug'] = "edit.php?post_type={$settings['parent_slug']}";
+				}
+				break;
+		}
+		
+		if ( $admin_options['render'] == 'cmb2-tabs' ){
+			$settings['tab_group'] ??= $settings['parent_slug'] ?? $settings['id'];
+			$settings['tab_title'] ??= $settings['menu_title'];
+		}
+
+		if ( isset( $settings['fields'] ) ){
+			$this->fields = $settings['fields'];
+			/**
+			 * @todo revisit this - might not need to unset fields
+			 */
+			unset( $settings['fields'] );
+		}
+
+		/**
+		 * If args are formatted for SettingsPage we convert to CMB2 options format
+		 * Convert nested sections=>fields to straight title, fields, title, fields.
+		 * 
+		 * @todo export this to dedicated method
+		 */
+		if ( isset( $settings['sections'] ) ){
+			$this->fields = [];
+			foreach ( $settings['sections'] as $section ){
+				$title_field = [];
+				if ( $id = $section['id'] ?? $section['slug'] ){
+					$title_field['id'] = $id;
+				}
+				if ( $name = $section['name'] ?? $section['title'] ){
+					$title_field['name'] = $name;
+				}
+				if ( $desc = $section['desc'] ?? $section['description'] ){
+					$title_field['desc'] = $desc;
+				}
+				if ( ! empty($title_field)){
+					$title_field['type'] = 'title';
+					$this->fields[] = $title_field;
+				}
+
+				foreach ($section['fields'] as $field){
+					$field = $this->convert_field_to_cmb2_field($field);
+					$this->fields[] = $field;
+				}
+			}
+			unset( $settings['sections'] );
+		}
+
+
+		/**
+		 * Special provision for cmb2-switch
+		 */
+		if ( ! class_exists( 'CMB2_Switch_Button' ) ){
+			array_walk(
+				$this->fields,
+				function( &$field ){
+					if ( $field['type'] == 'switch'){
+						$field['type'] = 'checkbox';
+					}
+				}
+			);
+		}
+
+		// re-insert fields back into settings
+		$settings['fields'] = $this->fields;
+
+		$this->cmb2_options = $settings;
+
+		// register parent pages before sub-menu pages
+		$priority = empty( $settings['parent_slug'] ) ? 9 : 10;
+
+		add_action( 'cmb2_admin_init', [ $this, 'register_metabox' ], $priority );
+
+		/**
+		 * @todo add 'submenu' field and functionality to WPHelper\AdminPage
+		 * @todo reverse control/flow - so 'tab title' inherits/defaults to AdminPage 'submenu' field if exists.
+		 */
+		if ( empty( $settings['parent_slug'] ) && $settings['menu_title'] != $settings['tab_title'] ){
+			add_action('admin_menu', [ $this, 'replace_submenu_title'], 11 );
+		}
+
+	}
+
+	public function register_metabox(){
+		$this->cmb = new CMB2( $this->cmb2_options );
+	}
+
+	/**
+	 * Display options-page output. To override, set 'display_cb' box property.
+	 * 
+	 * @param CMB2_Options_Hook $hookup - instance of Options Page Hookup class (caller of this function)
+	 * 
+	 * @see CMB2_Options_Hook
+	 */
+	public function options_page_output( $hookup ) {
+		include $this->admin_page->get_render_tpl();
+	}
+
+
+	private function convert_field_to_cmb2_field( $field ){
+
+		$field['id']   ??= $field['slug']        ?? null;
+		$field['name'] ??= $field['title']       ?? null;
+		$field['desc'] ??= $field['description'] ?? null;
+		
+		unset( $field['slug'] );
+		unset( $field['title'] );
+		unset( $field['description'] );
+
+		return array_filter($field);
+	}
+
+
+	/**
+	 * Replace submenu title of parent item with tab title
+	 * 
+	 * @todo add 'submenu' field and functionality to WPHelper\PluginCore
+	 */
+	public function replace_submenu_title(){
+
+		remove_submenu_page( $this->cmb2_options['id'], $this->cmb2_options['id'] );// Remove the default submenu so we can add our customized version.
+		add_submenu_page(
+			$this->cmb2_options['id'],
+			$this->cmb2_options['title'],
+			$this->cmb2_options['tab_title'],
+			$this->cmb2_options['capability'],
+			$this->cmb2_options['id'],
+			'',
+			0,
+		);
+	}
+}
+endif;

vendor/abuyoyo/adminmenupage/src/CMB2_OptionsPage_Multi.php

@@ -0,0 +1,30 @@
+<?php
+namespace WPHelper;
+
+defined( 'ABSPATH' ) || die( 'No soup for you!' );
+
+include_once __DIR__ . '/CMB2_Override_Meta.php';
+
+if ( ! class_exists( 'WPHelper\CMB2_OptionsPage_Multi' ) ):
+/**
+ * CMB2_OptionsPage - MULTI
+ * 
+ * Helper class
+ * Custom CMB2 Options page - saves each field as separate option in Options table.
+ * Create WordPress Setting page using CMB2 Options Hookup.
+ * 
+ * @author  abuyoyo
+ * 
+ * @todo - Rename class from MULTI to something more descriptive
+ */
+class CMB2_OptionsPage_Multi extends CMB2_OptionsPage{
+	use CMB2_Override_Meta;
+
+	function __construct( $admin_page )
+	{
+		parent::__construct( $admin_page );
+
+		$this->cmb2_override_fields( $this->fields );
+	}
+}
+endif;

vendor/abuyoyo/adminmenupage/src/CMB2_Override_Meta.php

@@ -0,0 +1,56 @@
+<?php
+namespace WPHelper;
+
+defined( 'ABSPATH' ) || die( 'No soup for you!' );
+
+if ( ! trait_exists('CMB2_Override_Meta') ):
+/**
+ * CMB2 Options page override meta
+ * 
+ * Override default cmb2 meta.
+ * Saves each field as separate option in wp_options table
+ */
+trait CMB2_Override_Meta{
+
+	function cmb2_override_fields( $fields ){
+		foreach( $fields as $field ){
+			add_filter( "cmb2_override_{$field['id']}_meta_value",  [ $this, 'cmb2_override_get' ], 10, 4 );
+			add_filter( "cmb2_override_{$field['id']}_meta_save",   [ $this, 'cmb2_override_save' ], 10, 4 );
+			add_filter( "cmb2_override_{$field['id']}_meta_remove", [ $this, 'cmb2_override_delete' ], 10, 4 );
+		}
+	}
+
+	/**
+	 * cmb2_override_meta_value
+	 * 
+	 */
+	function cmb2_override_get( $override, $args, $field_args, $field ) {
+		return get_option( $field_args['field_id'], '' );
+	}
+
+	/**
+	 * cmb2_override_meta_save
+	 * 
+	 */
+	function cmb2_override_save( $override, $args, $field_args, $field ) {
+		// Here, we're storing the data to the options table, but you can store to any data source here.
+		// If to a custom table, you can use the $args['id'] as the reference id.
+		$updated = update_option( $field_args['id'], $args['value'], false );
+		return !! $updated;
+	}
+
+	/**
+	 * cmb2_override_meta_remove
+	 * 
+	 */
+	function cmb2_override_delete( $override, $args, $field_args, $field ) {
+		// Here, we're removing from the options table, but you can query to remove from any data source here.
+		// If from a custom table, you can use the $args['id'] to query against.
+		// (If we do "delete_option", then our default value will be re-applied, which isn't desired.)
+		$updated = update_option( $field_args['id'], '' );
+		// $updated = update_option( $field_args['field_id'], '' );
+		return !! $updated;
+	}
+
+}
+endif;

vendor/abuyoyo/adminmenupage/src/PluginInfoMetaBox.php

@@ -0,0 +1,65 @@
+<?php
+namespace WPHelper;
+
+use DateTime;
+use function get_plugin_data;
+
+if ( ! class_exists( 'WPHelper\PluginInfoMetaBox' ) ):
+/**
+ * Plugin Info Metabox
+ * 
+ * Get instance of PluginCore
+ * Render default plugin info box template.
+ */
+class PluginInfoMetaBox{
+
+	private $tpl = '/tpl/plugin_info_meta_box.php';
+
+	/**
+	 * @var PluginCore
+	 */
+	private $plugin_core;
+
+	function __construct( PluginCore $plugin_core )
+	{
+		$this->plugin_core = $plugin_core;
+	}
+
+	/**
+	 * PLUGIN INFO BOX
+	 * 
+	 * Display plugin info meta-box on admin pages
+	 * 
+	 * @since iac_engine 1.1.0
+	 * @since iac_engine 1.2.0 plugin_info_box now a function
+	 * @since iac_engine 1.3.0 use 'Last Update' header
+	 */
+	function plugin_info_box(){
+
+		$plugin_data = get_plugin_data( $this->plugin_core->file() , false ); // false = no markup (i think)
+
+
+		$last_update = $plugin_data['Last Update'] ?: $plugin_data['Release Date'];
+		$last_update = DateTime::createFromFormat('Y_m_d', $last_update);
+
+		// $last_update = new DateTime('now');
+		// $last_update->add(new DateInterval('P1D'));
+		// $last_update->add(new DateInterval('P2D'));
+		if ($last_update):
+			$diff = (int) abs( time() - $last_update->format('U') );
+
+			if ( $diff < (DAY_IN_SECONDS) ){
+				$update_message = 'Today';
+			}elseif ($diff < (2 * DAY_IN_SECONDS)){
+				$update_message = 'Yesterday';
+			}else{
+				$update_message = human_time_diff($last_update->format('U')) . ' ago';
+			}
+		else:
+			$update_message = '';
+		endif;
+
+		include __DIR__ . $this->tpl;
+	}
+}
+endif;

vendor/abuyoyo/adminmenupage/src/SettingsPage.php

@@ -0,0 +1,327 @@
+<?php
+namespace WPHelper;
+
+defined( 'ABSPATH' ) || die( 'No soup for you!' );
+
+use function register_setting;
+use function add_settings_section;
+use function add_settings_field;
+use function checked;
+use function get_option;
+
+if ( ! class_exists( 'WPHelper\SettingsPage' ) ):
+/**
+ * SettingsPage
+ * 
+ * Helper class
+ * Create WordPress Setting page.
+ * 
+ * @author  abuyoyo
+ * 
+ * @since 0.11
+ */
+class SettingsPage{
+
+	/**
+	 * AdminPage instance that called this class
+	 * 
+	 * @var AdminPage $admin_page instance
+	 */
+	protected $admin_page;
+
+	/**
+	 * Page slug to display sections
+	 * 
+	 * @var String $page
+	 */
+	protected $page;
+
+	/**
+	 * option_name key used in wp_options table
+	 * 
+	 * @var String $option_name
+	 */
+	protected $option_name;
+
+	/**
+	 * option_group used by register_setting() and settings_fields()
+	 * 
+	 * @var String $option_group
+	 */
+	public $option_group;
+
+	/**
+	 * Sections
+	 * 
+	 * @var Array[] $sections
+	 */
+	public $sections = [];
+
+	/**
+	 * Fields
+	 * 
+	 * @var Array[] $fields
+	 */
+	public $fields = [];
+
+	/**
+	 * Constructor.
+	 *
+	 * @param AdminPage $admin_page instance
+	 * @param null $settings deprecated
+	 */
+	public function __construct( $admin_page, $settings = null )
+	{
+
+		if ( ! empty( $settings ) ) {
+			_deprecated_argument( __FUNCTION__, '3.0.0' );
+		}
+
+		// save reference to caller instance
+		$this->admin_page = $admin_page;
+
+		$admin_options = $admin_page->options();
+		$settings = $admin_options['settings'];
+
+		$this->page = $admin_options['slug'];
+
+		$this->option_name = $settings['option_name'] ?? str_replace( '-', '_' , strtolower( $this->page ) );
+
+		$this->option_group = $settings['option_group'] ?? $this->page . '_option_group';
+
+		foreach ( $settings['sections'] as $section ) {
+			// extract fields
+			foreach ( $section['fields'] as $field ){
+				$field['section_id'] = $section['id']; // create back-reference in field to section. ( @see add_settings_field() )
+				$this->fields[] = $field;
+			}
+			unset( $section['fields'] );
+			$this->sections[] = $section; // save without fields
+		}
+	}
+
+	function setup() {
+		add_action( 'admin_init', [ $this, 'register_settings' ] );
+	}
+
+	public function register_settings() {
+		register_setting(
+			$this->option_group, // $option_group - A settings group name. Must exist prior to the register_setting call. This must match the group name in settings_fields()
+			$this->option_name, // $option_name - The name of an option to sanitize and save.
+			[ $this,'sanitize_settings' ] // $sanitize_callback - A callback function that sanitizes the option's value. (see also: built-in php callbacks)
+		);
+
+		foreach ( $this->sections as $section ){
+			add_settings_section(
+				$section['id'], // $id - Slug-name to identify the section. Used in the 'id' attribute of tags.
+				$section['title'] ?? null, // $title - Formatted title of the section. Shown as the heading for the section.
+				$this->section_description_cb( $section ), // $callback - Function that echos out any content at the top of the section (between heading and fields).
+				$this->page // $page - The slug-name of the settings page on which to show the section.
+											//Built-in pages include 'general', 'reading', 'writing', 'discussion', 'media', etc.
+			);
+		}
+
+		foreach ( $this->fields as $field ) {
+			add_settings_field(
+				$field['id'],
+				$field['title'],
+				[ $this, "print_{$field['type']}" ],
+				$this->page, // can built-in pages: (general, reading, writing, ...)
+				$field['section_id'],
+				$field //send setting array as $args for print function
+			);
+		}
+
+	}
+
+	/**
+	 * Print text input field
+	 * Support field type 'text'
+	 * 
+	 * @since 0.11
+	 */
+	function print_checkbox( $field ) {
+		extract($field);
+
+		$options = get_option( $this->option_name );
+
+		$input_tag = sprintf(
+			'<label for="%1$s">
+				<input name="%2$s[%1$s]" type="checkbox" id="%1$s" value="1"  %4$s />
+			%3$s</label>',
+			$id,
+			$this->option_name,
+			$description,
+			checked( ( $options[$id] ?? false ), '1', false)
+		);
+
+		/**
+		 * Allow plugins to directly manipulate field HTML
+		 */
+		$input_tag = apply_filters( 'wphelper/settings_page/input_checkbox', $input_tag, $field, $this->option_name, $options );
+
+		echo $input_tag;
+
+	}
+
+	/**
+	 * Print text input field
+	 * Support field type 'text'
+	 * 
+	 * @since 0.19
+	 */
+	function print_text( $field ) {
+		extract($field);
+
+		$options = get_option( $this->option_name );
+
+		$input_tag = sprintf(
+			'<input name="%2$s[%1$s]" type="text" id="%1$s" value="%3$s" class="regular-text">',
+			$id,
+			$this->option_name,
+			$default
+		);
+
+		if ( ! empty( $description ) ) {
+			$input_tag .= sprintf(
+				'<p class="description" id="%1$s-description">%2$s</p>',
+				$id,
+				$description
+			);
+		}
+
+		/**
+		 * Allow plugins to directly manipulate field HTML
+		 */
+		$input_tag = apply_filters( 'wphelper/settings_page/input_text', $input_tag, $field, $this->option_name, $options );
+
+		echo $input_tag;
+
+	}
+
+	/**
+	 * Print url input field
+	 * Support field type 'url'
+	 * 
+	 * @since 0.19
+	 */
+	function print_url( $field ){
+		extract($field);
+
+		$options = get_option( $this->option_name );
+
+		$input_tag = sprintf(
+			'<input name="%2$s[%1$s]" type="url" id="%1$s" value="%3$s" class="regular-text code ">',
+			$id,
+			$this->option_name,
+			$default
+		);
+
+		if ( ! empty( $description ) ) {
+			$input_tag .= sprintf(
+				'<p class="description" id="%1$s-description">%2$s</p>',
+				$id,
+				$description
+			);
+		}
+
+		/**
+		 * Allow plugins to directly manipulate field HTML
+		 */
+		$input_tag = apply_filters( 'wphelper/settings_page/input_url', $input_tag, $field, $this->option_name, $options );
+
+		echo $input_tag;
+
+	}
+
+	/**
+	 * Print email input field
+	 * Support field type 'email'
+	 * 
+	 * @since 0.19
+	 */
+	function print_email( $field ){
+		extract($field);
+
+		$options = get_option( $this->option_name );
+
+		$input_tag = sprintf(
+			'<input name="%2$s[%1$s]" type="email" id="%1$s" aria-describedby="%1$s-description" value="%3$s" class="regular-text ltr">',
+			$id,
+			$this->option_name,
+			$default
+		);
+
+		if ( ! empty( $description ) ) {
+			$input_tag .= sprintf(
+				'<p class="description" id="%1$s-description">%2$s</p>',
+				$id,
+				$description
+			);
+		}
+
+		/**
+		 * Allow plugins to directly manipulate field HTML
+		 */
+		$input_tag = apply_filters( 'wphelper/settings_page/input_email', $input_tag, $field, $this->option_name, $options );
+
+		echo $input_tag;
+
+	}
+
+	/**
+	 * Sanitizes entire $options array.
+	 */
+	function sanitize_settings( $options ) {
+		$new_options = [];
+
+		foreach( $options as $id => $option ) {
+			$field = reset(
+				array_filter(
+					$this->fields,
+					fn($item) => $item['id'] == $id
+				)
+			);
+			switch ( $field['type'] ){
+				case 'checkbox':			
+					$new_options[$id] = $option == 1 ? 1 : 0;
+					break;
+				case 'text':			
+					$new_options[$id] = sanitize_text_field( $option );
+					break;
+				case 'email':			
+					$new_options[$id] = sanitize_email( $option );
+					break;
+				case 'url':			
+					$new_options[$id] = sanitize_url( $option );
+					break;
+				default:
+					break;
+			}
+		}
+
+		return $new_options;
+	}
+
+	function section_description_cb( $section ) {
+		if ( ! empty( $section['description'] ) ) {
+			switch ( $section[ 'description_container' ] ?? '' ){
+				case 'card':
+					$container = '<div class="card">%s</div>';
+					break;
+				case 'notice':
+				case 'notice-info':
+					$container = '<div class="notice notice-info inline"><p>%s</p></div>';
+					break;
+				case 'none':
+					$container = '%s';
+					break;
+				default:
+					$container = '<p>%s</p>';
+					break;
+			}
+			return fn() => printf( $container, $section['description'] );
+		}
+	}
+}
+endif;

vendor/abuyoyo/adminmenupage/src/tpl/cmb-form.php

@@ -0,0 +1,15 @@
+<?php
+/**
+ * Template form.cmb-form
+ * 
+ * Print form tag used by CMB2 options page.
+ * 
+ * @var WPHelper\CMB2_Options_Page $this
+ * @var CMB2_Options_Hook $hookup
+ */
+?>
+<form class="cmb-form" action="<?php echo esc_url( admin_url( 'admin-post.php' ) ); ?>" method="POST" id="<?php echo $this->cmb->cmb_id; ?>" enctype="multipart/form-data" encoding="multipart/form-data">
+	<input type="hidden" name="action" value="<?php echo esc_attr( $hookup->option_key ); ?>">
+	<?php $hookup->options_page_metabox(); ?>
+	<?php submit_button( esc_attr( $this->cmb->prop( 'save_button' ) ), 'primary', 'submit-cmb' ); ?>
+</form>

vendor/abuyoyo/adminmenupage/src/tpl/cmb-title.php

@@ -0,0 +1,9 @@
+<?php
+/**
+ * Template for CMB2 page title
+ * 
+ * @var WPHelper\CMB2_Options_Page $this
+ */
+if ( $this->cmb->prop( 'title' ) ) {
+	echo '<h2>' . wp_kses_post( $this->cmb->prop( 'title' ) ) . '</h2>';
+}

vendor/abuyoyo/adminmenupage/src/tpl/cmb2-unavailable.php

@@ -0,0 +1,9 @@
+<div class="wrap">
+	<h1><?= get_admin_page_title() ?></h1>
+
+	<div class="card">
+		<h3>CMB2 Plugin Missing</h3>
+		<p>CMB2 plugin is required to display this page.
+		<br>Download and activate CMB2 plugin.
+	</div>
+</div>

vendor/abuyoyo/adminmenupage/src/tpl/cmb2_options_page-plugin_info.php

@@ -0,0 +1,42 @@
+<?php
+/**
+ * Template for CMB2 Options Page
+ * 
+ * @var WPHelper\CMB2_Options_Page $this
+ * @var CMB2_Options_Hook $hookup
+ */
+?>
+<style>
+	/* 
+	 * fix top container alignment issues when using 2 columns
+	 * This assumes first item is a title item
+	 */
+	.cmb2-options-page .cmb2-wrap .cmb-type-title:first-of-type {
+		margin-top: 0;
+	}
+</style>
+<div class="wrap cmb2-options-page option-<?php echo esc_attr( sanitize_html_class( $hookup->option_key ) ); ?>">
+
+	<?php include 'cmb-title.php' ?>
+	<?php include 'tab-nav.php' ?>
+
+	<div id="poststuff">
+		<div id="post-body" class="metabox-holder columns-2">
+
+			<!-- main content -->
+			<div id="post-body-content">
+				<div class="meta-box-sortables ui-sortable tabs-content">
+					<?php include 'cmb-form.php' ?>
+				</div><!-- .meta-box-sortables -->
+			</div><!-- #post-body-content -->
+
+			<!-- sidebar -->
+			<div id="postbox-container-1" class="postbox-container">
+				<div class="meta-box-sortables">
+					<?php do_action("wphelper/adminpage/plugin_info_box/{$this->admin_page->get_slug()}"); ?>
+				</div><!-- .meta-box-sortables -->
+			</div><!-- #postbox-container-1 .postbox-container -->
+		</div><!-- #post-body -->
+		<div class="clear"></div>
+	</div><!-- #poststuff -->
+</div><!-- .wrap -->

vendor/abuyoyo/adminmenupage/src/tpl/cmb2_options_page.php

@@ -0,0 +1,13 @@
+<?php
+/**
+ * Template for CMB2 Options Page
+ * 
+ * @var WPHelper\CMB2_Options_Page $this
+ * @var CMB2_Options_Hook $hookup
+ */
+?>
+<div class="wrap cmb2-options-page option-<?php echo esc_attr( sanitize_html_class( $hookup->option_key ) ); ?>">
+	<?php include 'cmb-title.php' ?>
+	<?php include 'tab-nav.php' ?>
+	<?php include 'cmb-form.php' ?>
+</div>

vendor/abuyoyo/adminmenupage/src/tpl/default.php

@@ -0,0 +1,17 @@
+<div class="wrap">
+	<h1><?= get_admin_page_title() ?></h1>
+
+	<div class="card">
+		<h3>WPHelper\AdminPage</h3>
+		<p>Please provide a template file or callback function to render this page
+		<br />Like so:
+		</p>
+		<pre><code style="display: block;">new WPHelper\AdminPage(
+	[
+		'slug'     => '<?=$this->slug?>',
+		'title'    => '<?=$this->title?>',
+		<strong><em>'render' => 'callback_or_tpl_file',</em></strong>
+	]
+);</code></pre>
+	</div>
+</div>

vendor/abuyoyo/adminmenupage/src/tpl/plugin_info_meta_box.php

@@ -0,0 +1,27 @@
+<?php
+/**
+ * Plugin Info Metabox
+ */
+?>
+<style>
+	#plugin_info h2 {
+		border-bottom: 1px solid #eee;
+	}
+	#plugin_info h3{
+		font-weight: 100;
+		font-size: 1.5em;
+	}
+</style>
+<div id="plugin_info" class="postbox">
+	<h2><span>Plugin Info</span></h2>
+	<div class="inside">
+		<h3><?=$plugin_data['Name'] ?></h3>
+		<p>
+			Version: <?= $plugin_data['Version'] ?><br/>
+			Author: <a href="<?= $plugin_data['AuthorURI'] ?>"><?= $plugin_data['Author'] ?></a><br/>
+			GitHub: <a href="<?= $plugin_data['PluginURI'] ?>"><?= $plugin_data['TextDomain'] ?></a><br/>
+			<?php if ( ! empty( $update_message ) ): ?>Last Updated: <?= $update_message ?><?php endif; ?>
+		</p>
+	</div><!-- .inside -->
+
+</div><!-- .postbox -->

vendor/abuyoyo/adminmenupage/src/tpl/settings-form.php

@@ -0,0 +1,14 @@
+<?php
+/**
+ * Settings-Page settings form
+ * 
+ * Print WordPress settings form and submit button.
+ */
+?>
+<form method="post" action="options.php">
+	<?php
+	settings_fields( $this->settings_page->option_group );// Print hidden setting fields
+	do_settings_sections( $this->get_slug() );// Print title, info callback and form-table
+	submit_button();
+	?>
+</form>

vendor/abuyoyo/adminmenupage/src/tpl/tab-nav.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Template - Tabs navigation row
+ * 
+ * Print tabs navigation row.
+ * 
+ * @var CMB2_Options_Hook $hookup
+ */
+if ( ! isset( $hookup ) ){
+	return;
+}
+
+$tabs = $hookup->get_tab_group_tabs();
+
+if ( count( $tabs ) > 1 ){
+	$hookup->options_page_tab_nav_output();
+}

vendor/abuyoyo/adminmenupage/src/tpl/wrap-sidebar.php

@@ -0,0 +1,31 @@
+<?php
+/**
+ * Template for CMB2 Options Page
+ * 
+ * @var string $ob_content - Render template or callback
+ * @var AdminPage $this
+ */
+?>
+<div class="wrap">
+	<h1><?= get_admin_page_title() ?></h1>
+	<?php include 'tab-nav.php' ?>
+	<div id="poststuff">
+		<div id="post-body" class="metabox-holder columns-2">
+
+			<!-- main content -->
+			<div id="post-body-content">
+				<div class="meta-box-sortables ui-sortable tabs-content">
+					<?php echo $ob_content ?>
+				</div><!-- .meta-box-sortables -->
+			</div><!-- #post-body-content -->
+
+			<!-- sidebar -->
+			<div id="postbox-container-1" class="postbox-container">
+				<div class="meta-box-sortables">
+					<?php do_action("wphelper/adminpage/plugin_info_box/{$this->get_slug()}"); ?>
+				</div><!-- .meta-box-sortables -->
+			</div><!-- #postbox-container-1 .postbox-container -->
+		</div><!-- #post-body -->
+		<div class="clear"></div>
+	</div><!-- #poststuff -->
+</div><!-- .wrap -->

vendor/abuyoyo/adminmenupage/src/tpl/wrap-simple.php

@@ -0,0 +1,10 @@
+<?php
+/**
+ * Simple wrap
+ */
+?>
+<div class="wrap">
+	<h1><?= get_admin_page_title() ?></h1>
+	<?php include 'tab-nav.php' ?>
+	<?php echo $ob_content; ?>
+</div>

vendor/abuyoyo/adminmenupage/wph_admin_page.php

@@ -0,0 +1,34 @@
+<?php
+/**
+ * Plugin Name: WPHelper/Admin-Page
+ */
+defined( 'ABSPATH' ) || die( 'No soup for you!' );
+
+if ( ! function_exists( 'wph_extra_plugin_headers' ) ):
+/**
+ * WPHelper Extra Plugin Headers
+ *
+ * Adds 'Last Update' and 'Release Date' header option to plugins
+ * Used in plugin info-box
+ * Can be used by all plugins
+ */
+function wph_extra_plugin_headers( $headers ){
+
+	if ( empty( $headers ) ){
+		$headers = [];
+	}
+
+	if ( ! in_array( 'Last Update', $headers ) ){
+		$headers[] = 'Last Update';
+	}
+
+	if ( ! in_array( 'Release Date', $headers ) ){
+		$headers[] = 'Release Date';
+	}
+
+	return $headers;
+
+}
+add_filter( 'extra_plugin_headers', 'wph_extra_plugin_headers' );
+add_filter( 'extra_theme_headers',  'wph_extra_plugin_headers' );
+endif;

vendor/abuyoyo/plugincore/CHANGELOG.md

@@ -0,0 +1,102 @@
+# WPHelper\PluginCore Changelog
+
+## 0.20
+Release Date: Jul 29, 2022
+
+### Changed
+
+- Update `composer.json` dependencies - `abuyoyo/adminmenupage ~0.20`.
+
+## 0.19
+Release Date: Jul 27, 2022
+
+### Changed
+
+- Update `composer.json` dependencies.
+- Require PHP >= 7.4
+
+## 0.18
+Release Date: May 22, 2022
+
+### Changed
+
+- Class `PluginCore` is pluggable.
+- Prevent direct PHP script execution if not accessed within the WordPress environment.
+
+### Fixed
+
+- Include `plugin.php` if function `get_plugin_data` does not exist. This could case critical failure.
+
+## 0.17
+Release Date: Feb 7, 2021
+
+### Added
+
+- Pass instance of `PluginCore` to `AdminPage` if current version supports it (used in Plugin Info Metabox generation).
+
+## 0.16
+
+### Fixed
+
+- Upgrade callback `upgrade_cb` will execute when only single plugin is updated.
+
+## 0.15
+
+### Changed
+
+- Use `new WPHelper\AdminPage()` (WPHelper\AdminMenuPage >= 0.12) instead of deprecated `AdminMenuPage`.
+- Do not hook `Puc_v4_Factory::buildUpdateChecker` on `admin_init`. Run in plugin's global scope.
+
+## 0.14
+
+### Added
+
+- Add `admin_page` option to create a WPHelper\AdminMenuPage instance.
+- Add `plugin_data` variable with WordPress core `get_plugin_data()` object. Use header data if no slug or title provided.
+
+### Fixed
+- Fix PHP defines when `const` not provided.
+
+## 0.13.3
+- Fix `upgrade_cb` function handling.
+
+## 0.13.2
+- Fix `upgrade_cb_wrapper` function.
+
+## 0.13.1
+- Update `composer.json` version.
+
+## 0.13
+- Fix `upgrade_cb_wrapper` function.
+
+## 0.12
+- Add upgrade_cb wrapper function that conducts sanity-checks before calling `upgrade_cb` callback provided.
+- Add `plugin_basename()` getter/setter function and `plugin_basename` variable.
+- Add changelog.
+
+## 0.11
+- Add `upgrade_cb` option - callable function to run on WordPress `upgrader_process_complete` hook.
+
+## 0.10
+- Fix undefined index PHP notices introduced in version 0.9
+
+## 0.9
+- Add automatic plugin update checker using `yahnis-elsts/plugin-update-checker` library.
+
+## 0.8
+- Fix wrong `plugin_basename` constant.
+
+## 0.7
+- Don't use `extarct` in constructor
+- Add sanity checks and normalize getter/setter functions
+- Add `file()` getter function.
+
+## 0.6
+- Add `path()`, `url()` getter/setter functions.
+- Add `name()` getter function.
+
+## 0.5
+- Initial release.
+- Defines `PLUGINNAME_URL`, `_PATH`, `_DIR`, `_BASENAME`, `_FILE` constants for plugin.
+- Registers plugin activation, deactivation and uninstall hook if callbacks provided.
+- Static function `PluginCore::get($slug)` will return instance of PluginCore registered with `$slug`. Thus PluginCore can be initiated without polluting global scope.

vendor/abuyoyo/plugincore/LICENSE

@@ -0,0 +1,29 @@
+BSD 3-Clause License
+
+Copyright (c) 2019, abuyoyo
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/abuyoyo/plugincore/PluginCore.php

@@ -0,0 +1,469 @@
+<?php
+namespace WPHelper;
+
+use Puc_v4_Factory;
+
+use function add_action;
+use function get_plugin_data;
+use function register_activation_hook;
+use function register_deactivation_hook;
+use function register_uninstall_hook;
+
+defined( 'ABSPATH' ) || die( 'No soup for you!' );
+
+if( ! function_exists('get_plugin_data') ) {
+	include_once( ABSPATH . 'wp-admin/includes/plugin.php' );
+}
+
+if ( ! class_exists( 'WPHelper/PluginCore' ) ):
+/**
+ * PluginCore
+ * 
+ * Helper Class for creating WordPress Plugins
+ * 
+ * Defines PLUGIN_PATH, PLUGIN_URL (etc.) constants
+ * (@see README.md)
+ * 
+ * @version 0.20
+ * 
+ * @todo plugin_action_links - on Plugins page
+ */
+class PluginCore {
+
+	/**
+	 * @var string 
+	 */
+	private $title;
+
+	/**
+	 * @var string 
+	 */
+	private $slug;
+
+	/**
+	 * @var string Plugin filename
+	 */
+	private $plugin_file;
+
+	/**
+	 * @var string 
+	 */
+	private $const;
+
+	/**
+	 * @var callable 
+	 */
+	public $activate_cb;
+
+	/**
+	 * @var callable 
+	 */
+	public $deactivate_cb;
+
+	/**
+	 * @var callable 
+	 */
+	public $uninstall_cb;
+
+	/**
+	 * @var callable 
+	 */
+	public $upgrade_cb;
+
+	/**
+	 * @var AdminPage
+	 */
+	public $admin_page;
+
+	/**
+	 * @var \Puc_v4p10_Plugin_UpdateChecker
+	 */
+	private $update_checker;
+
+	/**
+	 * @var string Repo uri
+	 */
+	private $update_repo_uri;
+
+	/**
+	 * @var string Repo authentication key
+	 */
+	private $update_auth;
+	
+	/**
+	 * @var string Repo branch
+	 */
+	private $update_branch;
+
+
+
+	/**
+	 * Static array of all PluginCore instances
+	 * Used in PluginCore::get($slug)
+	 * 
+	 * @var array[PluginCore] Instances of PluginCore
+	 */
+	static $cores = [];
+
+	/**
+	 * Retrieve instance of PluginCore by plugin slug.
+	 * 
+	 * @param string $slug - Plugin slug
+	 * @return PluginCore - Instance of specific plugin.
+	 */
+	static public function get( $slug ) {
+		return self::$cores[ $slug ] ?? null;
+	}
+
+	function __construct( $plugin_file, $options = null ) {
+
+		$this->plugin_file( $plugin_file );
+
+		if ( is_array( $options ) && ! empty( $options ) ) {
+
+			$options = (object) $options;
+
+			if ( isset( $options->title ) ) {
+				$this->title( $options->title );
+			}else{
+				$this->title(); // get title from header plugin_data
+			}
+
+			if ( isset( $options->slug ) ) {
+				$this->slug( $options->slug );
+			}else{
+				$this->slug(); // guess slug from plugin basename
+			}
+			
+			if ( isset( $options->const ) ) {
+				$this->const( $options->const );
+			}else{
+				$this->const();
+			}
+
+			if ( isset( $options->admin_page ) ) {
+				$this->admin_page( $options->admin_page );
+			}
+
+			if ( isset( $options->activate_cb ) )
+				$this->activate_cb( $options->activate_cb );
+
+			if ( isset( $options->deactivate_cb ) )
+				$this->deactivate_cb( $options->deactivate_cb );
+
+			if ( isset( $options->uninstall_cb ) )
+				$this->uninstall_cb( $options->uninstall_cb );
+
+			if ( isset( $options->upgrade_cb ) )
+				$this->upgrade_cb( $options->upgrade_cb );
+
+			if ( isset( $options->update_checker ) ) {
+				$this->update_checker( $options->update_checker );
+			}
+		}
+		
+		$this->setup();
+
+	}
+
+	/**
+	 * Define plugin constants (_PATH, _URL, _BASENAME, _FILE etc.)
+	 * Register activation, deactivation, uninstall, upgrade hooks.
+	 * Init PUC update checker.
+	 * Add PluginCore instance to static $cores
+	 * 
+	 * @todo rename method bootstrap()
+	 * @todo set plugin_dir_path, plugin_basename as accessible public variables (available thru methods atm)
+	 */
+	function setup() {
+
+		// init path and url
+		// redundant init() and path() are getter/setter methods.
+		$this->path();
+		$this->url();
+
+		define( $this->const() . '_PATH', $this->path() );
+		define( $this->const() . '_DIR', $this->path() );
+
+		define( $this->const() . '_URL', $this->url() );
+		define( $this->const() . '_BASENAME', $this->plugin_basename() );
+
+		define( $this->const() . '_PLUGIN_FILE',  $this->plugin_file );
+		define( $this->const() . '_FILE',  $this->plugin_file );
+
+		$this->register_hooks();
+
+		self::$cores[ $this->slug() ] = $this; // using slug() method
+
+
+		if ( $this->update_checker == true ) {
+			// run early - before Puc_v4p8_Scheduler->maybeCheckForUpdates() [admin_init 10]
+			// hooking on admin_init does not work with wp_plugin_updates as it requires user logged-in
+			// add_action( 'admin_init', [$this, 'init_update_checker'], 9 );
+			$this->init_update_checker();
+		}
+	}
+
+	private function register_hooks() {
+
+		if ( ! empty( $this->activate_cb ) ) // && is_callable() ?
+			register_activation_hook( $this->plugin_file, $this->activate_cb );
+		
+		if ( ! empty( $this->deactivate_cb ) )
+			register_deactivation_hook( $this->plugin_file, $this->deactivate_cb );
+
+		if ( ! empty( $this->uninstall_cb ) )
+			register_uninstall_hook( $this->plugin_file, $this->uninstall_cb );
+
+		if ( ! empty( $this->upgrade_cb ) )
+			add_action( 'upgrader_process_complete', [ $this, 'upgrade_cb_wrapper' ], 10, 2 );
+	}
+
+	/**
+	 * Getter/Setter - title
+	 * Plugin title.
+	 * If none provided - plugin header Title will be used.
+	 * 
+	 * @param  string|null $title
+	 * @return string      $this->title
+	 */
+	public function title( $title = null ) {
+		
+		if ( ! empty( $title ) ) {
+			$title = esc_html( $title );
+			$this->title = $title;
+		}	
+
+		if ( empty( $this->title ) ) {
+			$this->plugin_data();
+			$this->title = $this->plugin_data['Title'];
+		}
+
+		return $this->title;
+	}
+
+	/**
+	 * Wrapper function for $this->title()
+	 */
+	public function name( $title = null ) {
+		return $this->title( $title );
+	}
+
+	/**
+	 * Getter/Setter - slug
+	 * Plugin slug.
+	 * If none provided - plugin file basename will be used
+	 * 
+	 * @param  string|null $slug
+	 * @return string      $this->slug
+	 */
+	public function slug( $slug = null ) {
+		// doing it this way means slug can only be set once.
+		return $this->slug ??= $slug ?: basename( $this->plugin_file, '.php' );
+	}
+
+	/**
+	 * Setter - plugin_file (also Getter - kinda)
+	 * Plugin file fully qualified path.
+	 * 
+	 * @param  string $plugin_file - Path to plugin file
+	 * @return string $this->plugin_file
+	 */
+	public function plugin_file( $plugin_file ) {
+		$this->plugin_file = $plugin_file;
+		return $this->plugin_file;
+	}
+
+	/**
+	 * GETTER function. NOT a wrapper
+	 * Might have to rethink this
+	 * used by test-plugin update_checker
+	 * 
+	 * @todo revisit this
+	 */
+	public function file() {
+		return $this->plugin_file;
+	}
+
+
+	public function plugin_data() {
+		if ( empty( $this->plugin_data ) ) {
+			$this->plugin_data = get_plugin_data( $this->plugin_file, false);
+		}
+		return $this->plugin_data;
+	}
+
+	/**
+	 * Getter/Setter - const
+	 * Prefix of plugin specific defines (PLUGIN_NAME_PATH etc.)
+	 * If not provided - plugin slug will be uppercased.
+	 * 
+	 * @param  string|null $const (string should be uppercased)
+	 * @return string      $this->const
+	 */
+	public function const( $const = null ) {
+		
+		// if $const provided - use that
+		if ( ! empty( $const ) ) {
+			$this->const = $const;
+		}
+
+		// if no $const provided - generate from slug()
+		if ( empty( $this->const ) ) {
+			$this->const = str_replace( '-', '_' , strtoupper( $this->slug() ) ); // using slug() getter/setter
+		}
+		
+		return $this->const;
+	}
+
+	public function admin_page( $admin_page ) {
+		if ( empty( $admin_page['slug'] ) ) {
+			$admin_page['slug'] = $this->slug();
+		}
+		if ( empty( $admin_page['title'] ) ) {
+			$admin_page['title'] = $this->title();
+		}
+
+		$this->admin_page = new AdminPage( $admin_page );
+
+		if ( method_exists( $this->admin_page, 'plugin_core' ) ) {
+			$this->admin_page->plugin_core( $this );
+		}
+
+		return $this->admin_page;
+	}
+
+
+	public function path() {
+		if ( empty( $this->path ) )
+			$this->path = plugin_dir_path( $this->plugin_file );
+		return $this->path;
+	}
+
+	public function url() {
+		if ( empty( $this->url ) )
+			$this->url = plugin_dir_url( $this->plugin_file );
+		return $this->url;
+	}
+
+	public function plugin_basename() {
+		if ( empty( $this->plugin_basename ) )
+			$this->plugin_basename = plugin_basename( $this->plugin_file );
+		return $this->plugin_basename;
+	}
+
+	private function activate_cb( $activate_cb ) {
+		// test is_callable() ? or is it too soon?
+		$this->activate_cb = $activate_cb;
+	}
+
+	private function deactivate_cb( $deactivate_cb ) {
+		// test is_callable() ? or is it too soon?
+		$this->deactivate_cb = $deactivate_cb;
+	}
+
+	private function uninstall_cb( $uninstall_cb ) {
+		// test is_callable() ? or is it too soon?
+		$this->uninstall_cb = $uninstall_cb;
+	}
+
+	private function upgrade_cb( $upgrade_cb ) {
+		// test is_callable() ? or is it too soon?
+		$this->upgrade_cb = $upgrade_cb;
+	}
+
+	private function update_checker( $update_checker ) {
+		// Puc_v4_Factory::buildUpdateChecker
+		if ( empty( $update_checker ) ) {
+			$this->update_checker = false;
+		}else{
+			if ( is_bool( $update_checker ) ) {
+				$this->update_checker = $update_checker;
+			}
+
+			if ( is_string( $update_checker ) ) {
+				$this->update_checker = true;
+				$this->update_repo_uri = $update_checker;
+			}
+
+			if ( is_array( $update_checker ) ) {
+				$this->update_checker = true;
+
+				if ( isset( $update_checker['uri'] ) ) {
+					$this->update_repo_uri = $update_checker['uri'];
+				}
+				if ( isset( $update_checker['auth'] ) ) {
+					$this->update_auth = $update_checker['auth'];
+				}
+
+				if ( isset( $update_checker['branch'] ) ) {
+					$this->update_branch = $update_checker['branch'];
+				}
+			}
+		}
+	}
+
+	public function init_update_checker() {
+	
+		if ( ! class_exists('Puc_v4_Factory') )
+			return;
+
+		if ( ! isset( $this->update_repo_uri ) ) {
+			$this->plugin_data();
+			
+			if ( isset( $this->plugin_data['PluginURI'] ) )
+				$this->update_repo_uri = $this->plugin_data['PluginURI'];
+			else
+				return;
+		}
+		// wp_dump($this);
+		$update_checker = Puc_v4_Factory::buildUpdateChecker(
+			$this->update_repo_uri,
+			$this->plugin_file,
+			$this->slug() // using slug()
+		);
+
+		//Optional: If you're using a private repository, specify the access token like this:
+		if ( isset( $this->update_auth ) )
+			$update_checker->setAuthentication( $this->update_auth );
+
+		//Optional: Set the branch that contains the stable release.
+		if ( isset( $this->update_branch ) )
+			$update_checker->setBranch( $this->update_branch );
+
+	}
+
+	/**
+	 * upgrade_cb_wrapper
+	 * 
+	 * This function only called if upgrade_cb is set (@see register_hooks())
+	 * This function called on upgrader_process_complete
+	 * sanity-checks if our plugin was upgraded
+	 * if so - calls upgrade_cb provided by our plugin
+	 */
+	public function upgrade_cb_wrapper( $upgrader_object, $options ) {
+		if(
+			$options['action'] == 'update'  // has upgrade taken place
+			&&
+			$options['type'] == 'plugin' // is it a plugin upgrade
+			&&
+			(
+				(
+					isset( $options['plugins'] ) // is list of plugins upgraded
+					&&
+					in_array( $this->plugin_basename(), $options['plugins']) // is our plugin in that list
+				)
+				||
+				( // single plugin updated
+					isset( $options['plugin'] )
+					&&
+					$this->plugin_basename() == $options['plugin']
+				)
+			)
+		) {
+			call_user_func( $this->upgrade_cb, $upgrader_object, $options );
+		}
+	}
+
+}
+endif;

vendor/abuyoyo/plugincore/README.md

@@ -0,0 +1,85 @@
+# WPHelper \ PluginCore
+
+> Helper class for registering plugins.
+
+Plugin Boilerplates and boilerplate generator are a hassle. The file structure they impose is way too cumbersome (and redundant) to push into every single plugin. WPHelper\PluginCore replaces boilerplates with one simple class (usually hidden away somewhere in your ``vendor/`` dir).  
+
+[WPHelper\AdminMenuPage](https://github.com/abuyoyo/AdminMenuPage) can be used to register and generate admin menus if your plugin requires that.
+
+## Requirements
+* PHP >= 7.4
+* [Composer](https://getcomposer.org/)
+* [WordPress](https://wordpress.org)
+
+## Installation
+
+Install with [Composer](https://getcomposer.org/) or just drop PluginCore.php into your plugin folder and require it.
+
+```PHP
+// Require the Composer autoloader anywhere in your code.
+require __DIR__ . '/vendor/autoload.php';
+
+```
+
+OR
+
+```PHP
+// Require the class file directly from your plugin.
+require_once __DIR__ . 'PluginCore.php';
+
+```
+
+
+WPHelper\PluginCore uses [PSR-4](https://www.php-fig.org/psr/psr-4/) to autoload.
+
+## Basic Usage
+
+WpHelper/PluginCore replaces the many plugin core skeleton generators out there. Just add these lines of code at the top of your plugin file and you're good to go.
+
+WpHelper/PluginCore will define %PLUGIN%_BASENAME, %PLUGIN%_PATH, %PLUGIN%_URL, %PLUGIN%_FILE constants available to your code.
+
+```PHP
+/*
+ * Plugin Name: My Awesome Plugin
+ * Description: Plugin's description.
+ * Version:  1.0.0
+ */
+
+// Import PluginCore.
+use WPHelper\PluginCore;
+
+// Register the plugin
+$args = [
+    'title' => 'My Awesome Plugin',
+    'slug' => 'my-awesome-plugin',
+    'const' => 'MYPLUGIN' // Optional - slug used to define constants: MYPLUGIN_DIR, MYPLUGIN_URL etc. (if not provided will use 'slug' in ALLCAPS)
+    'activate_cb' => 'activate_callback' // Optional - Provide a callable function to run on activation
+    'deactivate_cb' => 'deactivate_callback' // Optional - Provide a callable function to run on deactivation
+    'uninstall_cb' => 'uninstall_callback' // Optional - (@todo) Consider using uninstall.php and not this plugin. This plugin can run in the global scope and cause problems
+];
+
+// Setup plugin constants and activation/deactivation hooks
+$my_plugin_core = new PluginCore( __FILE__, $args );
+
+// Start writing your code here..
+```
+
+### Constants
+
+WPHelper\PluginCore defines constants for use in your code. Where ``__FILE__`` is the filename provided to the class and ``%PLUGIN%`` is the  ``'const_slug'`` provided.
+Like so:
+
+```PHP
+define( '%PLUGIN%_URL', plugin_dir_url( __FILE__ ) );
+define( '%PLUGIN%_FILE', __FILE__ );
+```
+
+These are the constants defined by WPHelper\PluginCore. There are some redundancies to account for different conventions.
+
+* %PLUGIN%_PATH: ``plugin_dir_path( __FILE__ ) )``
+* %PLUGIN%_DIR: ``plugin_dir_path( __FILE__ ) )``
+* %PLUGIN%_URL:  ``plugin_dir_url( __FILE__ ) )``
+* %PLUGIN%_URI:  ``plugin_dir_url( __FILE__ ) )``
+* %PLUGIN%_BASENAME: ``plugin_basename( __FILE__ ) )``
+* %PLUGIN%_FILE: ``__FILE__``
+* %PLUGIN%_PLUGIN_FILE: ``__FILE__``

vendor/abuyoyo/plugincore/composer.json

@@ -0,0 +1,17 @@
+{
+	"name": "abuyoyo/plugincore",
+	"description": "WordPress plugin core helper class",
+	"type": "library",
+	"version": "0.20",
+	"time": "2022-07-29",
+	"license": "BSD-3-Clause",
+	"require": {
+		"yahnis-elsts/plugin-update-checker": "~4.12",
+		"abuyoyo/adminmenupage": "~0.20"
+	},
+	"autoload": {
+		"psr-4": {
+			"WPHelper\\" : ""
+		}
+	}
+}

vendor/abuyoyo/screen-meta-links/.github/workflows/create-github-release.yml

@@ -0,0 +1,38 @@
+# Create Github Release
+# v1.0
+# Create Github release on tag push
+# - Use tag name as release title
+# - Use CHANGELOG.md log entry as body
+
+on:
+  push:
+    # Sequence of patterns matched against refs/tags
+    tags:
+      - '*' # Match any tag
+
+name: Create Release
+
+jobs:
+  build:
+    name: Create Release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Get Changelog Entry
+        id: changelog_reader
+        uses: mindsers/changelog-reader-action@v1.1.0
+        with:
+          version: ${{ github.ref }}
+          path: ./CHANGELOG.md
+      - name: Create Release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: ${{ github.ref }}
+          body: ${{ steps.changelog_reader.outputs.log_entry }} # This pulls from the GET CHANGELOG ENTRY step above, referencing it's ID to get its outputs object, which include a `log_entry`. See this blog post for more info: https://jasonet.co/posts/new-features-of-github-actions/#passing-data-to-future-steps
+          draft: false
+          prerelease: false

vendor/abuyoyo/screen-meta-links/.gitignore

@@ -0,0 +1,2 @@
+demo/*
+demo/

vendor/abuyoyo/screen-meta-links/CHANGELOG.md

@@ -0,0 +1,38 @@
+# Screen Meta Links
+
+API for adding custom `screen-meta-links` links and panels alongside the 'Screen Options' and 'Help' links on the WordPress admin page.
+
+## [0.11](https://github.com/abuyoyo/screen-meta-links/releases/tag/0.11)
+
+### Removed
+- Drop support for `add_screen_meta_link`. This is a backward-incopatible change!
+
+### Added
+- New API function `wph_add_screen_meta_panel` replaces `add_screen_meta_link`.
+
+### Changed
+- Style is printed in inline style tag.
+
+### Fixed
+- Fix conflict with other plugins importing `add_screen_meta_link` such as `broken-link-checker` (issue #1).
+
+## [0.10](https://github.com/abuyoyo/screen-meta-links/releases/tag/0.10)
+
+### Added
+- Add `composer.json` file. Library can be imported as composer library.
+- Add `CHANGELOG.md` file
+- Github action - create release on push tag.
+
+## [0.9](https://github.com/abuyoyo/screen-meta-links/releases/tag/0.9)
+- Initial release.
+- Modified fork of Janis Elsts' library function `add_screen_meta_link`.
+
+### Added
+- Library can be imported as WordPress plugin.
+- Ability to insert panels to screen-meta-links.
+- Inline (render-blocking) javascript adds meta-links panel and button\link at run-time. Before `screenMeta.init()` script in WordPress's `common.js`. Allowing for full integration.
+
+
+### Changed
+- Add optional `panel` parameter to function `add_screen_meta_link`. This is backward-compatible with Janis Elsts' function of the same name, and any plugins using the original function.
+- Rewrite screen-meta-link registration process. Optimized for performance.

vendor/abuyoyo/screen-meta-links/README.md

@@ -0,0 +1,60 @@
+# Screen Meta Links API
+
+> Easily add screen-meta-links panels to WordPress admin pages
+
+## Description
+
+API for adding custom screen-meta-links alongside the "Screen Options" and "Help" links on WordPress admin pages.
+
+This library uses render-blocking javascript to get get around WordPress's lack of API for adding tabs to the screen-meta-links.
+
+## Installation
+
+### WordPress Plugin
+Screen-Meta-Links API can be installed as a WordPress plugin by dropping this directory into the `plugins` directory and activating from the Plugins page.
+
+### Library
+Screen-Meta-Links can also be used as library by using Composer
+
+```bash
+composer install abuyoyo\screen-meta-links
+```
+
+## Compatibility with original Screen-Meta-Links classes
+
+- $page parameter accepts single string or array of strings. Either file string `index.php` or name `dashboard`. Use `*` to display panel on all pages. Empty string will disable panel on all pages.
+- If only `$href` is provided without corresponding `$panel` - a simple link will be added.
+- If both `$href` and `$panel` are provided - a button and panel are added.
+
+## Usage
+
+```php
+
+/**
+ * Add a new link to the screen meta area.
+ *
+ * This function can be called on current_screen hook (priority < 100) or earlier (admin_init is fine)
+ * Plugin begins heavy-lifting (filtering and processing) on current_screen priority 100
+ *
+ * @param string           $id         - Link ID. Should be unique and a valid HTML ID attribute.
+ * @param string           $text       - Link text. The text appearing on the tab.
+ * @param string           $href       - Optional. Link URL to be used if no panel is provided
+ *                                       Support for `add_screen_meta_link` original usage.
+ * @param string|string[]  $page       - The page(s) where you want to add the link.
+ * @param array            $attributes - Optional. Additional attributes for the link tag.
+ *                                       Add 'aria-controls' => "{$id}-wrap" to toggle panel
+ * @param callback         $panel      - Optional. Callback should echo screen-meta panel HTML content.
+ *
+ * @return void
+ */
+wph_add_screen_meta_panel( $id, $text, $href, $page, $attributes, $panel );
+
+```
+
+### The `$page` Parameter
+
+The `$page` parameter accepts a string or array of strings.  
+Accepts `page`, `post`, `dashboard` etc.  
+Or actual file name: `post.php`, `index.php` etc. (`index.php` and `dashboard` will resolve to the same page).  
+Accepts custom page id's: `toplevel_page_my-plugin` etc.  
+Accepts wildcard: `*` - This will add the meta-screen-panel to all admin pages.  

vendor/abuyoyo/screen-meta-links/composer.json

@@ -0,0 +1,8 @@
+{
+	"name": "abuyoyo/screen-meta-links",
+	"description": "API for adding custom screen-meta-links alongside the 'Screen Options' and 'Help' links.",
+	"type": "library",
+	"autoload": {
+        "files": ["screen-meta-links.php"]
+    }
+}

vendor/abuyoyo/screen-meta-links/css/screen_meta_links.css

@@ -0,0 +1,16 @@
+.custom-screen-meta-link-wrap {
+	float: right;
+	height: 28px;
+	margin: 0 0 0 6px;
+	border: 1px solid #ddd;
+	border-top: none;
+	background: #fff;
+	box-shadow: 0 1px 1px -1px rgba(0,0,0,.1);
+	
+}
+
+
+.site-health #screen-meta{
+	margin: 0;
+}
+

vendor/abuyoyo/screen-meta-links/js/screen-meta-links.js

@@ -0,0 +1,51 @@
+
+
+(function($, links, panels){
+	'use strict'	
+	
+	$(document).on('ready', function(){
+		var container = $('#screen-meta-links');
+		var container_panels = $('#screen-meta');
+		var linkTag; //if we have a panel it's a button - otherwise it's a link anchor
+		debugger;
+		if (!container.length){
+			container = $('<div />')
+				.attr({
+					'id' : 'screen-meta-links'
+				});
+			container.insertAfter('#screen-meta');
+		}
+		
+		$.each( links, function( i, element ) {
+			
+			if (panels[i]){
+				container_panels.append(
+					$('<div />')
+						.attr({
+							'id' : element.id + '-wrap',
+							'class' : 'hidden',
+							'tabindex' : '-1',
+							'aria-label' : element.text + ' Tab'
+						})
+						.html(panels[i])
+				);
+				
+				linkTag = '<button />'; 
+			}else{
+				linkTag = '<a />';
+			}
+			
+			container.append(
+				$('<div />')
+					.attr({
+						'id' : element.id + '-link-wrap',
+						'class' : 'hide-if-no-js screen-meta-toggle custom-screen-meta-link-wrap'
+					})
+					.append( $( linkTag, element) )
+			);
+		});
+	});
+
+	
+
+})( jQuery, sml.links, sml.panels );

vendor/abuyoyo/screen-meta-links/screen-meta-links.php

@@ -0,0 +1,372 @@
+<?php
+/**
+ * Plugin Name: abuyoyo / Screen Meta Links
+ * Description: API for adding custom screen-meta-links alongside the "Screen Options" and "Help" links.
+ * Version: 0.11
+ * Author: abuyoyo
+ * Author URI: https://github.com/abuyoyo
+ * Plugin URI: https://github.com/abuyoyo/screen-meta-links
+*/
+/**
+ * TODO:
+ * 
+ * if panel exists add 'aria-controls' attribute if none supplied
+ * if no panel exists render anchor tag instead of button
+ * 
+ * 
+ */
+
+if ( ! defined( 'SML_FILE' ) ) define ( 'SML_FILE', __FILE__ );
+if ( ! defined( 'SML_URL' ) )  define ( 'SML_URL', plugin_dir_url( __FILE__ ) );
+if ( ! defined( 'SML_PATH' ) ) define ( 'SML_PATH', plugin_dir_path( __FILE__ ) );
+
+if ( ! class_exists('Screen_Meta_Links') ):
+
+ 
+class Screen_Meta_Links {
+
+	protected static $instance = null;
+	
+	static $registered_requests;
+	static $links;
+	static $panels;
+	static $counter;
+
+	static $debug = false;
+	
+	/**
+	 * Constructor.
+	 * 
+	 * @return void
+	 */
+	function __construct(){
+		global $iac_eng_settings;
+		
+		self::$registered_requests = array();
+		self::$links = array();
+		self::$panels = array();
+		
+		self::$counter = -1;
+		
+		if( defined( 'DEBUG_SCREEN_META_LINKS' ) ){
+			self::$debug = true;
+		}
+		
+		// inline solution
+		add_action( 'current_screen' , [ $this, 'setup_current_screen_meta_links' ], 100 );
+		add_action( 'admin_notices', [ $this, 'append_meta_links' ] ); // print inline sml script
+		add_action( 'admin_head', [ $this, 'print_inline_style'] );
+		
+		// external load solution 
+		// add_action( 'admin_enqueue_scripts', [ $this, 'enqueue_scripts' ] );
+		// add_action( 'admin_print_styles', [ $this, 'add_link_styles' ] ); //admin_enqueue_styles too early
+	}
+	
+	/**
+	 * Get Instance
+	 * 
+	 * @return self::$instance
+	 */
+	public static function get_instance() {
+		if (null == self::$instance) {
+			self::$instance = new self;
+		}
+		return self::$instance;
+	}
+	
+	
+	/**
+	 * Register a new link (and optional panel) to the screen-meta area.
+	 * 
+	 * Do not call this method directly. Instead, use the global add_screen_meta_link() function.
+	 * 
+	 * @param string $id            - Link ID. Should be unique and a valid value for a HTML ID attribute.
+	 * @param string $text          - Link text.
+	 * @param string|string[] $page - The page(s) where you want to add the link.
+	 * @param array $attributes     - Optional. Additional attributes for the link tag. Add 'aria-controls' => "{$id}-wrap" to toggle panel 
+	 * @param callback $panel       - Optional. Callback should print out screen-meta panel contents
+	 *
+	 * @return void
+	 */
+	public function register_request($id, $text, $href='', $page='', $attributes = null, $panel=''){
+		self::$counter++;
+		self::$registered_requests[self::$counter] = compact( 'id', 'text', 'href', 'page', 'attributes', 'panel');
+	}
+	
+	
+	/**
+	 * Setup all requests hooked to this screen
+	 * 
+	 * @hook current_screen
+	 */
+	public function setup_current_screen_meta_links( $screen ){	
+		foreach(self::$registered_requests as $request_index => $args){
+			$this->process_request($request_index, $args['id'], $args['text'], $args['href'], $args['page'], $args['attributes'], $args['panel']);
+		}
+	}
+	
+	
+	/**
+	 * process_request
+	 * 
+	 * @todo sanitize user input!
+	 * @todo maybe don't use compact()
+	 */
+	private function process_request($request_index, $id, $text, $href, $page='', $attributes = null, $panel=''){
+		
+		if ( ! $this->show_on_this_screen($id, $page) ){
+			return;
+		}
+				
+		if ( is_null($attributes) )
+			$attributes = array();
+		if ( !is_array($attributes) )
+			$attributes = array($attributes);
+		
+		if ($panel)
+			$link = compact('id', 'text' );
+		else
+			$link = compact('id', 'text', 'href' );
+		
+		$link = array_merge($link, $attributes);
+		
+		if ( empty($link['class']) )
+			$link['class'] = '';
+		$link['class'] = 'show-settings custom-screen-meta-link ' . $link['class'];
+		
+		if ($panel)
+			$link['class'] = 'button ' . $link['class'];
+
+		self::$links[$request_index] = $link;
+	
+		
+		if ($panel){
+			ob_start();
+				call_user_func($panel);
+			$panel =	ob_get_clean();
+			
+			self::$panels[$request_index] = $panel;
+		}
+		
+	}
+	
+	
+	
+	
+	
+	/**
+	 * Test if registered link should be displayed on this screen
+	 * 
+	 * @param $id
+	 * @param string|string[] $pages - list of hook_suffix or screen id to show screen-meta-link on
+	 * 
+	 * @return boolean
+	 */
+	private function show_on_this_screen($id, $pages){
+		global $hook_suffix;
+
+		if ( ! is_array( $pages ) ){
+			$pages = [ $pages ];
+		}
+		
+		$screen = convert_to_screen($hook_suffix);
+		$add_to_current_page = false;
+		foreach( $pages as $k => $page ){
+			if ( ! $page )//ignore empty string. otherwise - will return same as '*' (on screen->id test)
+				continue;
+			
+			$page_as_screen = convert_to_screen($page);
+			if ( $page == $hook_suffix || $page_as_screen->id == $screen->id || $page == '*' ){
+				$add_to_current_page = true;
+				break;
+			}
+		}
+		
+		return $add_to_current_page;
+	}
+	
+	
+	/**
+	 * DISABLED/UNUSED
+	 * 
+	 * Enqueueing does not work.
+	 * Instead we add our script and data inline using append_meta_links().
+	 * 
+	 * @see append_meta_links()
+	 */
+	public function enqueue_scripts(){
+		if ( empty(self::$links) ){
+			return;
+		}
+
+		wp_enqueue_script( 'screen_meta_links', SML_URL . 'js/screen-meta-links.js', 'jquery' );
+		wp_localize_script( 'screen_meta_links', 'sml', [ 'links' => self::$links, 'panels' => self::$panels ] );
+	}
+
+	/**
+	 * Output the JS that appends the custom meta links to the page.
+	 * Hooked on 'admin_notices' action.
+	 * 
+	 * This is very much a render-blocking script
+	 * Runs here before the wp script that inits screen-meta-links runs
+	 * (enqueueing external script w/ localized variables failed to add listener to button)
+	 *
+	 * @access public
+	 * @return void
+	 */
+	public function append_meta_links(){
+		
+		if ( empty(self::$links) ){
+			return;
+		}
+		
+		// ---------------------[meta-screen-links script]-----------------------
+		?>
+		<script type="text/javascript">
+			(function($, links, panels){
+				
+				var container = $('#screen-meta-links');
+				var container_panels = $('#screen-meta');
+				var linkTag; //if we have a panel it's a button - otherwise it's a link anchor
+				
+				if (!container.length){
+					container = $('<div />')
+						.attr({
+							'id' : 'screen-meta-links'
+						});
+					container.insertAfter('#screen-meta');
+				}
+				
+				$.each( links, function( i, element ) {
+					
+					if (panels[i]){
+						container_panels.append(
+							$('<div />')
+								.attr({
+									'id' : element.id + '-wrap',
+									'class' : 'hidden',
+									'tabindex' : '-1',
+									'aria-label' : element.text + ' Tab'
+								})
+								.html(panels[i])
+						);
+						
+						linkTag = '<button />'; 
+					}else{
+						linkTag = '<a />';
+					}
+					
+					container.append(
+						$('<div />')
+							.attr({
+								'id' : element.id + '-link-wrap',
+								'class' : 'hide-if-no-js screen-meta-toggle custom-screen-meta-link-wrap'
+							})
+							.append( $( linkTag, element) )
+					);
+				});
+			
+			})(
+				jQuery,
+				<?php echo json_encode(self::$links); ?>,
+				<?php echo json_encode(self::$panels); ?>  );
+		</script>
+		
+		<?php 
+	}
+	
+	
+	/**
+	 * DISABLED/UNUSED
+	 * 
+	 * Output the CSS code for custom screen meta links. Required because WP only
+	 * has styles for specific meta links (by #id), not meta links in general.
+	 * 
+	 * Callback for 'admin_print_styles'.
+	 * 
+	 * This function is unused because we cannot reliably obtain URL of css file.
+	 * Instead we add inline style using print_inline_style().
+	 * 
+	 * @see print_inline_style
+	 * 
+	 * @access public 
+	 * @return void
+	 */
+	function add_link_styles(){
+		//Don't output the CSS if there are no custom meta links for this page.
+		if ( empty(self::$links) )
+			return;
+		
+		wp_enqueue_style( 'screen-meta-links' , SML_URL . 'css/screen_meta_links.css');
+	}
+
+
+	/**
+	 * Output inline style tag.
+	 * 
+	 * Output the CSS code for custom screen meta links. Required because WP only
+	 * has styles for specific meta links (by #id), not meta links in general.
+	 * 
+	 * @hook admin_head
+	 */
+	public function print_inline_style(){
+
+		//Don't output the CSS if there are no custom meta links for this page.
+		if ( empty(self::$links) )
+			return;
+
+		ob_start();
+		include SML_PATH . 'css/screen_meta_links.css';	
+		$css =	ob_get_clean();
+
+		echo '<style>';
+		echo $css;
+		echo '</style>';
+	}
+
+}
+
+
+endif;
+
+
+
+/**
+ * DEMO
+ *
+ * A separate editable demo file
+ * For debugging purposes
+ * 
+ */
+if( defined('DEMO_SCREEN_META_LINKS') ){
+	include plugin_dir_path( __FILE__ ) . 'demo/demo_screen_meta_links.php' ;
+}
+
+if ( ! function_exists( 'wph_add_screen_meta_panel' ) ):
+/**
+ * Add a new link+panel to the screen meta area.
+ *
+ * This function can be called on current_screen hook (priority < 100) or earlier (admin_init is fine)
+ * Plugin begins heavy-lifting (filtering and processing) on current_screen priority 100
+ * 
+ * @param string 		$id - Link ID. Should be unique and a valid value for a HTML ID attribute.
+ * @param string 		$text - Link text.
+ * @param string 		$href - Optional. Link URL to be used if no panel is provided
+ * @param string|array 	$page - The page(s) where you want to add the link.
+ * @param array 		$attributes - Optional. Additional attributes for the link tag. Add 'aria-controls' => "{$id}-wrap" to toggle panel 
+ * @param callback 		$panel - Optional. Callback should print out screen-meta panel contents
+ * @return void
+ * 
+ * @todo Remove $href parameter and functionailty
+ */
+function wph_add_screen_meta_panel($id, $text, $href = '', $page, $attributes = null, $panel=''){
+	
+	static $sml_instance = null;
+	if ( null === $sml_instance){
+		$sml_instance = Screen_Meta_Links::get_instance();
+	}
+	
+	$sml_instance->register_request($id, $text, $href, $page, $attributes, $panel);
+	
+}
+endif;

vendor/autoload.php

@@ -0,0 +1,7 @@
+<?php
+
+// autoload.php @generated by Composer
+
+require_once __DIR__ . '/composer/autoload_real.php';
+
+return ComposerAutoloaderInit99e41faf4c8cd1b54927a50ca0e7ee5c::getLoader();

vendor/composer/ClassLoader.php

@@ -0,0 +1,481 @@
+<?php
+
+/*
+ * This file is part of Composer.
+ *
+ * (c) Nils Adermann <naderman@naderman.de>
+ *     Jordi Boggiano <j.boggiano@seld.be>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Composer\Autoload;
+
+/**
+ * ClassLoader implements a PSR-0, PSR-4 and classmap class loader.
+ *
+ *     $loader = new \Composer\Autoload\ClassLoader();
+ *
+ *     // register classes with namespaces
+ *     $loader->add('Symfony\Component', __DIR__.'/component');
+ *     $loader->add('Symfony',           __DIR__.'/framework');
+ *
+ *     // activate the autoloader
+ *     $loader->register();
+ *
+ *     // to enable searching the include path (eg. for PEAR packages)
+ *     $loader->setUseIncludePath(true);
+ *
+ * In this example, if you try to use a class in the Symfony\Component
+ * namespace or one of its children (Symfony\Component\Console for instance),
+ * the autoloader will first look for the class under the component/
+ * directory, and it will then fallback to the framework/ directory if not
+ * found before giving up.
+ *
+ * This class is loosely based on the Symfony UniversalClassLoader.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ * @author Jordi Boggiano <j.boggiano@seld.be>
+ * @see    https://www.php-fig.org/psr/psr-0/
+ * @see    https://www.php-fig.org/psr/psr-4/
+ */
+class ClassLoader
+{
+    private $vendorDir;
+
+    // PSR-4
+    private $prefixLengthsPsr4 = array();
+    private $prefixDirsPsr4 = array();
+    private $fallbackDirsPsr4 = array();
+
+    // PSR-0
+    private $prefixesPsr0 = array();
+    private $fallbackDirsPsr0 = array();
+
+    private $useIncludePath = false;
+    private $classMap = array();
+    private $classMapAuthoritative = false;
+    private $missingClasses = array();
+    private $apcuPrefix;
+
+    private static $registeredLoaders = array();
+
+    public function __construct($vendorDir = null)
+    {
+        $this->vendorDir = $vendorDir;
+    }
+
+    public function getPrefixes()
+    {
+        if (!empty($this->prefixesPsr0)) {
+            return call_user_func_array('array_merge', array_values($this->prefixesPsr0));
+        }
+
+        return array();
+    }
+
+    public function getPrefixesPsr4()
+    {
+        return $this->prefixDirsPsr4;
+    }
+
+    public function getFallbackDirs()
+    {
+        return $this->fallbackDirsPsr0;
+    }
+
+    public function getFallbackDirsPsr4()
+    {
+        return $this->fallbackDirsPsr4;
+    }
+
+    public function getClassMap()
+    {
+        return $this->classMap;
+    }
+
+    /**
+     * @param array $classMap Class to filename map
+     */
+    public function addClassMap(array $classMap)
+    {
+        if ($this->classMap) {
+            $this->classMap = array_merge($this->classMap, $classMap);
+        } else {
+            $this->classMap = $classMap;
+        }
+    }
+
+    /**
+     * Registers a set of PSR-0 directories for a given prefix, either
+     * appending or prepending to the ones previously set for this prefix.
+     *
+     * @param string       $prefix  The prefix
+     * @param array|string $paths   The PSR-0 root directories
+     * @param bool         $prepend Whether to prepend the directories
+     */
+    public function add($prefix, $paths, $prepend = false)
+    {
+        if (!$prefix) {
+            if ($prepend) {
+                $this->fallbackDirsPsr0 = array_merge(
+                    (array) $paths,
+                    $this->fallbackDirsPsr0
+                );
+            } else {
+                $this->fallbackDirsPsr0 = array_merge(
+                    $this->fallbackDirsPsr0,
+                    (array) $paths
+                );
+            }
+
+            return;
+        }
+
+        $first = $prefix[0];
+        if (!isset($this->prefixesPsr0[$first][$prefix])) {
+            $this->prefixesPsr0[$first][$prefix] = (array) $paths;
+
+            return;
+        }
+        if ($prepend) {
+            $this->prefixesPsr0[$first][$prefix] = array_merge(
+                (array) $paths,
+                $this->prefixesPsr0[$first][$prefix]
+            );
+        } else {
+            $this->prefixesPsr0[$first][$prefix] = array_merge(
+                $this->prefixesPsr0[$first][$prefix],
+                (array) $paths
+            );
+        }
+    }
+
+    /**
+     * Registers a set of PSR-4 directories for a given namespace, either
+     * appending or prepending to the ones previously set for this namespace.
+     *
+     * @param string       $prefix  The prefix/namespace, with trailing '\\'
+     * @param array|string $paths   The PSR-4 base directories
+     * @param bool         $prepend Whether to prepend the directories
+     *
+     * @throws \InvalidArgumentException
+     */
+    public function addPsr4($prefix, $paths, $prepend = false)
+    {
+        if (!$prefix) {
+            // Register directories for the root namespace.
+            if ($prepend) {
+                $this->fallbackDirsPsr4 = array_merge(
+                    (array) $paths,
+                    $this->fallbackDirsPsr4
+                );
+            } else {
+                $this->fallbackDirsPsr4 = array_merge(
+                    $this->fallbackDirsPsr4,
+                    (array) $paths
+                );
+            }
+        } elseif (!isset($this->prefixDirsPsr4[$prefix])) {
+            // Register directories for a new namespace.
+            $length = strlen($prefix);
+            if ('\\' !== $prefix[$length - 1]) {
+                throw new \InvalidArgumentException("A non-empty PSR-4 prefix must end with a namespace separator.");
+            }
+            $this->prefixLengthsPsr4[$prefix[0]][$prefix] = $length;
+            $this->prefixDirsPsr4[$prefix] = (array) $paths;
+        } elseif ($prepend) {
+            // Prepend directories for an already registered namespace.
+            $this->prefixDirsPsr4[$prefix] = array_merge(
+                (array) $paths,
+                $this->prefixDirsPsr4[$prefix]
+            );
+        } else {
+            // Append directories for an already registered namespace.
+            $this->prefixDirsPsr4[$prefix] = array_merge(
+                $this->prefixDirsPsr4[$prefix],
+                (array) $paths
+            );
+        }
+    }
+
+    /**
+     * Registers a set of PSR-0 directories for a given prefix,
+     * replacing any others previously set for this prefix.
+     *
+     * @param string       $prefix The prefix
+     * @param array|string $paths  The PSR-0 base directories
+     */
+    public function set($prefix, $paths)
+    {
+        if (!$prefix) {
+            $this->fallbackDirsPsr0 = (array) $paths;
+        } else {
+            $this->prefixesPsr0[$prefix[0]][$prefix] = (array) $paths;
+        }
+    }
+
+    /**
+     * Registers a set of PSR-4 directories for a given namespace,
+     * replacing any others previously set for this namespace.
+     *
+     * @param string       $prefix The prefix/namespace, with trailing '\\'
+     * @param array|string $paths  The PSR-4 base directories
+     *
+     * @throws \InvalidArgumentException
+     */
+    public function setPsr4($prefix, $paths)
+    {
+        if (!$prefix) {
+            $this->fallbackDirsPsr4 = (array) $paths;
+        } else {
+            $length = strlen($prefix);
+            if ('\\' !== $prefix[$length - 1]) {
+                throw new \InvalidArgumentException("A non-empty PSR-4 prefix must end with a namespace separator.");
+            }
+            $this->prefixLengthsPsr4[$prefix[0]][$prefix] = $length;
+            $this->prefixDirsPsr4[$prefix] = (array) $paths;
+        }
+    }
+
+    /**
+     * Turns on searching the include path for class files.
+     *
+     * @param bool $useIncludePath
+     */
+    public function setUseIncludePath($useIncludePath)
+    {
+        $this->useIncludePath = $useIncludePath;
+    }
+
+    /**
+     * Can be used to check if the autoloader uses the include path to check
+     * for classes.
+     *
+     * @return bool
+     */
+    public function getUseIncludePath()
+    {
+        return $this->useIncludePath;
+    }
+
+    /**
+     * Turns off searching the prefix and fallback directories for classes
+     * that have not been registered with the class map.
+     *
+     * @param bool $classMapAuthoritative
+     */
+    public function setClassMapAuthoritative($classMapAuthoritative)
+    {
+        $this->classMapAuthoritative = $classMapAuthoritative;
+    }
+
+    /**
+     * Should class lookup fail if not found in the current class map?
+     *
+     * @return bool
+     */
+    public function isClassMapAuthoritative()
+    {
+        return $this->classMapAuthoritative;
+    }
+
+    /**
+     * APCu prefix to use to cache found/not-found classes, if the extension is enabled.
+     *
+     * @param string|null $apcuPrefix
+     */
+    public function setApcuPrefix($apcuPrefix)
+    {
+        $this->apcuPrefix = function_exists('apcu_fetch') && filter_var(ini_get('apc.enabled'), FILTER_VALIDATE_BOOLEAN) ? $apcuPrefix : null;
+    }
+
+    /**
+     * The APCu prefix in use, or null if APCu caching is not enabled.
+     *
+     * @return string|null
+     */
+    public function getApcuPrefix()
+    {
+        return $this->apcuPrefix;
+    }
+
+    /**
+     * Registers this instance as an autoloader.
+     *
+     * @param bool $prepend Whether to prepend the autoloader or not
+     */
+    public function register($prepend = false)
+    {
+        spl_autoload_register(array($this, 'loadClass'), true, $prepend);
+
+        if (null === $this->vendorDir) {
+            return;
+        }
+
+        if ($prepend) {
+            self::$registeredLoaders = array($this->vendorDir => $this) + self::$registeredLoaders;
+        } else {
+            unset(self::$registeredLoaders[$this->vendorDir]);
+            self::$registeredLoaders[$this->vendorDir] = $this;
+        }
+    }
+
+    /**
+     * Unregisters this instance as an autoloader.
+     */
+    public function unregister()
+    {
+        spl_autoload_unregister(array($this, 'loadClass'));
+
+        if (null !== $this->vendorDir) {
+            unset(self::$registeredLoaders[$this->vendorDir]);
+        }
+    }
+
+    /**
+     * Loads the given class or interface.
+     *
+     * @param  string    $class The name of the class
+     * @return true|null True if loaded, null otherwise
+     */
+    public function loadClass($class)
+    {
+        if ($file = $this->findFile($class)) {
+            includeFile($file);
+
+            return true;
+        }
+
+        return null;
+    }
+
+    /**
+     * Finds the path to the file where the class is defined.
+     *
+     * @param string $class The name of the class
+     *
+     * @return string|false The path if found, false otherwise
+     */
+    public function findFile($class)
+    {
+        // class map lookup
+        if (isset($this->classMap[$class])) {
+            return $this->classMap[$class];
+        }
+        if ($this->classMapAuthoritative || isset($this->missingClasses[$class])) {
+            return false;
+        }
+        if (null !== $this->apcuPrefix) {
+            $file = apcu_fetch($this->apcuPrefix.$class, $hit);
+            if ($hit) {
+                return $file;
+            }
+        }
+
+        $file = $this->findFileWithExtension($class, '.php');
+
+        // Search for Hack files if we are running on HHVM
+        if (false === $file && defined('HHVM_VERSION')) {
+            $file = $this->findFileWithExtension($class, '.hh');
+        }
+
+        if (null !== $this->apcuPrefix) {
+            apcu_add($this->apcuPrefix.$class, $file);
+        }
+
+        if (false === $file) {
+            // Remember that this class does not exist.
+            $this->missingClasses[$class] = true;
+        }
+
+        return $file;
+    }
+
+    /**
+     * Returns the currently registered loaders indexed by their corresponding vendor directories.
+     *
+     * @return self[]
+     */
+    public static function getRegisteredLoaders()
+    {
+        return self::$registeredLoaders;
+    }
+
+    private function findFileWithExtension($class, $ext)
+    {
+        // PSR-4 lookup
+        $logicalPathPsr4 = strtr($class, '\\', DIRECTORY_SEPARATOR) . $ext;
+
+        $first = $class[0];
+        if (isset($this->prefixLengthsPsr4[$first])) {
+            $subPath = $class;
+            while (false !== $lastPos = strrpos($subPath, '\\')) {
+                $subPath = substr($subPath, 0, $lastPos);
+                $search = $subPath . '\\';
+                if (isset($this->prefixDirsPsr4[$search])) {
+                    $pathEnd = DIRECTORY_SEPARATOR . substr($logicalPathPsr4, $lastPos + 1);
+                    foreach ($this->prefixDirsPsr4[$search] as $dir) {
+                        if (file_exists($file = $dir . $pathEnd)) {
+                            return $file;
+                        }
+                    }
+                }
+            }
+        }
+
+        // PSR-4 fallback dirs
+        foreach ($this->fallbackDirsPsr4 as $dir) {
+            if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr4)) {
+                return $file;
+            }
+        }
+
+        // PSR-0 lookup
+        if (false !== $pos = strrpos($class, '\\')) {
+            // namespaced class name
+            $logicalPathPsr0 = substr($logicalPathPsr4, 0, $pos + 1)
+                . strtr(substr($logicalPathPsr4, $pos + 1), '_', DIRECTORY_SEPARATOR);
+        } else {
+            // PEAR-like class name
+            $logicalPathPsr0 = strtr($class, '_', DIRECTORY_SEPARATOR) . $ext;
+        }
+
+        if (isset($this->prefixesPsr0[$first])) {
+            foreach ($this->prefixesPsr0[$first] as $prefix => $dirs) {
+                if (0 === strpos($class, $prefix)) {
+                    foreach ($dirs as $dir) {
+                        if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr0)) {
+                            return $file;
+                        }
+                    }
+                }
+            }
+        }
+
+        // PSR-0 fallback dirs
+        foreach ($this->fallbackDirsPsr0 as $dir) {
+            if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr0)) {
+                return $file;
+            }
+        }
+
+        // PSR-0 include paths.
+        if ($this->useIncludePath && $file = stream_resolve_include_path($logicalPathPsr0)) {
+            return $file;
+        }
+
+        return false;
+    }
+}
+
+/**
+ * Scope isolated include.
+ *
+ * Prevents access to $this/self from included files.
+ */
+function includeFile($file)
+{
+    include $file;
+}

vendor/composer/InstalledVersions.php

@@ -0,0 +1,337 @@
+<?php
+
+/*
+ * This file is part of Composer.
+ *
+ * (c) Nils Adermann <naderman@naderman.de>
+ *     Jordi Boggiano <j.boggiano@seld.be>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Composer;
+
+use Composer\Autoload\ClassLoader;
+use Composer\Semver\VersionParser;
+
+/**
+ * This class is copied in every Composer installed project and available to all
+ *
+ * See also https://getcomposer.org/doc/07-runtime.md#installed-versions
+ *
+ * To require it's presence, you can require `composer-runtime-api ^2.0`
+ */
+class InstalledVersions
+{
+    private static $installed;
+    private static $canGetVendors;
+    private static $installedByVendor = array();
+
+    /**
+     * Returns a list of all package names which are present, either by being installed, replaced or provided
+     *
+     * @return string[]
+     * @psalm-return list<string>
+     */
+    public static function getInstalledPackages()
+    {
+        $packages = array();
+        foreach (self::getInstalled() as $installed) {
+            $packages[] = array_keys($installed['versions']);
+        }
+
+        if (1 === \count($packages)) {
+            return $packages[0];
+        }
+
+        return array_keys(array_flip(\call_user_func_array('array_merge', $packages)));
+    }
+
+    /**
+     * Returns a list of all package names with a specific type e.g. 'library'
+     *
+     * @param  string   $type
+     * @return string[]
+     * @psalm-return list<string>
+     */
+    public static function getInstalledPackagesByType($type)
+    {
+        $packagesByType = array();
+
+        foreach (self::getInstalled() as $installed) {
+            foreach ($installed['versions'] as $name => $package) {
+                if (isset($package['type']) && $package['type'] === $type) {
+                    $packagesByType[] = $name;
+                }
+            }
+        }
+
+        return $packagesByType;
+    }
+
+    /**
+     * Checks whether the given package is installed
+     *
+     * This also returns true if the package name is provided or replaced by another package
+     *
+     * @param  string $packageName
+     * @param  bool   $includeDevRequirements
+     * @return bool
+     */
+    public static function isInstalled($packageName, $includeDevRequirements = true)
+    {
+        foreach (self::getInstalled() as $installed) {
+            if (isset($installed['versions'][$packageName])) {
+                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Checks whether the given package satisfies a version constraint
+     *
+     * e.g. If you want to know whether version 2.3+ of package foo/bar is installed, you would call:
+     *
+     *   Composer\InstalledVersions::satisfies(new VersionParser, 'foo/bar', '^2.3')
+     *
+     * @param  VersionParser $parser      Install composer/semver to have access to this class and functionality
+     * @param  string        $packageName
+     * @param  string|null   $constraint  A version constraint to check for, if you pass one you have to make sure composer/semver is required by your package
+     * @return bool
+     */
+    public static function satisfies(VersionParser $parser, $packageName, $constraint)
+    {
+        $constraint = $parser->parseConstraints($constraint);
+        $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
+
+        return $provided->matches($constraint);
+    }
+
+    /**
+     * Returns a version constraint representing all the range(s) which are installed for a given package
+     *
+     * It is easier to use this via isInstalled() with the $constraint argument if you need to check
+     * whether a given version of a package is installed, and not just whether it exists
+     *
+     * @param  string $packageName
+     * @return string Version constraint usable with composer/semver
+     */
+    public static function getVersionRanges($packageName)
+    {
+        foreach (self::getInstalled() as $installed) {
+            if (!isset($installed['versions'][$packageName])) {
+                continue;
+            }
+
+            $ranges = array();
+            if (isset($installed['versions'][$packageName]['pretty_version'])) {
+                $ranges[] = $installed['versions'][$packageName]['pretty_version'];
+            }
+            if (array_key_exists('aliases', $installed['versions'][$packageName])) {
+                $ranges = array_merge($ranges, $installed['versions'][$packageName]['aliases']);
+            }
+            if (array_key_exists('replaced', $installed['versions'][$packageName])) {
+                $ranges = array_merge($ranges, $installed['versions'][$packageName]['replaced']);
+            }
+            if (array_key_exists('provided', $installed['versions'][$packageName])) {
+                $ranges = array_merge($ranges, $installed['versions'][$packageName]['provided']);
+            }
+
+            return implode(' || ', $ranges);
+        }
+
+        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
+    }
+
+    /**
+     * @param  string      $packageName
+     * @return string|null If the package is being replaced or provided but is not really installed, null will be returned as version, use satisfies or getVersionRanges if you need to know if a given version is present
+     */
+    public static function getVersion($packageName)
+    {
+        foreach (self::getInstalled() as $installed) {
+            if (!isset($installed['versions'][$packageName])) {
+                continue;
+            }
+
+            if (!isset($installed['versions'][$packageName]['version'])) {
+                return null;
+            }
+
+            return $installed['versions'][$packageName]['version'];
+        }
+
+        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
+    }
+
+    /**
+     * @param  string      $packageName
+     * @return string|null If the package is being replaced or provided but is not really installed, null will be returned as version, use satisfies or getVersionRanges if you need to know if a given version is present
+     */
+    public static function getPrettyVersion($packageName)
+    {
+        foreach (self::getInstalled() as $installed) {
+            if (!isset($installed['versions'][$packageName])) {
+                continue;
+            }
+
+            if (!isset($installed['versions'][$packageName]['pretty_version'])) {
+                return null;
+            }
+
+            return $installed['versions'][$packageName]['pretty_version'];
+        }
+
+        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
+    }
+
+    /**
+     * @param  string      $packageName
+     * @return string|null If the package is being replaced or provided but is not really installed, null will be returned as reference
+     */
+    public static function getReference($packageName)
+    {
+        foreach (self::getInstalled() as $installed) {
+            if (!isset($installed['versions'][$packageName])) {
+                continue;
+            }
+
+            if (!isset($installed['versions'][$packageName]['reference'])) {
+                return null;
+            }
+
+            return $installed['versions'][$packageName]['reference'];
+        }
+
+        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
+    }
+
+    /**
+     * @param  string      $packageName
+     * @return string|null If the package is being replaced or provided but is not really installed, null will be returned as install path. Packages of type metapackages also have a null install path.
+     */
+    public static function getInstallPath($packageName)
+    {
+        foreach (self::getInstalled() as $installed) {
+            if (!isset($installed['versions'][$packageName])) {
+                continue;
+            }
+
+            return isset($installed['versions'][$packageName]['install_path']) ? $installed['versions'][$packageName]['install_path'] : null;
+        }
+
+        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
+    }
+
+    /**
+     * @return array
+     * @psalm-return array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string}
+     */
+    public static function getRootPackage()
+    {
+        $installed = self::getInstalled();
+
+        return $installed[0]['root'];
+    }
+
+    /**
+     * Returns the raw installed.php data for custom implementations
+     *
+     * @deprecated Use getAllRawData() instead which returns all datasets for all autoloaders present in the process. getRawData only returns the first dataset loaded, which may not be what you expect.
+     * @return array[]
+     * @psalm-return array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string}>}
+     */
+    public static function getRawData()
+    {
+        @trigger_error('getRawData only returns the first dataset loaded, which may not be what you expect. Use getAllRawData() instead which returns all datasets for all autoloaders present in the process.', E_USER_DEPRECATED);
+
+        if (null === self::$installed) {
+            // only require the installed.php file if this file is loaded from its dumped location,
+            // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
+            if (substr(__DIR__, -8, 1) !== 'C') {
+                self::$installed = include __DIR__ . '/installed.php';
+            } else {
+                self::$installed = array();
+            }
+        }
+
+        return self::$installed;
+    }
+
+    /**
+     * Returns the raw data of all installed.php which are currently loaded for custom implementations
+     *
+     * @return array[]
+     * @psalm-return list<array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string}>}>
+     */
+    public static function getAllRawData()
+    {
+        return self::getInstalled();
+    }
+
+    /**
+     * Lets you reload the static array from another file
+     *
+     * This is only useful for complex integrations in which a project needs to use
+     * this class but then also needs to execute another project's autoloader in process,
+     * and wants to ensure both projects have access to their version of installed.php.
+     *
+     * A typical case would be PHPUnit, where it would need to make sure it reads all
+     * the data it needs from this class, then call reload() with
+     * `require $CWD/vendor/composer/installed.php` (or similar) as input to make sure
+     * the project in which it runs can then also use this class safely, without
+     * interference between PHPUnit's dependencies and the project's dependencies.
+     *
+     * @param  array[] $data A vendor/composer/installed.php data set
+     * @return void
+     *
+     * @psalm-param array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string}>} $data
+     */
+    public static function reload($data)
+    {
+        self::$installed = $data;
+        self::$installedByVendor = array();
+    }
+
+    /**
+     * @return array[]
+     * @psalm-return list<array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string}>}>
+     */
+    private static function getInstalled()
+    {
+        if (null === self::$canGetVendors) {
+            self::$canGetVendors = method_exists('Composer\Autoload\ClassLoader', 'getRegisteredLoaders');
+        }
+
+        $installed = array();
+
+        if (self::$canGetVendors) {
+            foreach (ClassLoader::getRegisteredLoaders() as $vendorDir => $loader) {
+                if (isset(self::$installedByVendor[$vendorDir])) {
+                    $installed[] = self::$installedByVendor[$vendorDir];
+                } elseif (is_file($vendorDir.'/composer/installed.php')) {
+                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
+                        self::$installed = $installed[count($installed) - 1];
+                    }
+                }
+            }
+        }
+
+        if (null === self::$installed) {
+            // only require the installed.php file if this file is loaded from its dumped location,
+            // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
+            if (substr(__DIR__, -8, 1) !== 'C') {
+                self::$installed = require __DIR__ . '/installed.php';
+            } else {
+                self::$installed = array();
+            }
+        }
+        $installed[] = self::$installed;
+
+        return $installed;
+    }
+}

vendor/composer/LICENSE

@@ -0,0 +1,21 @@
+
+Copyright (c) Nils Adermann, Jordi Boggiano
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished
+to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+

vendor/composer/autoload_classmap.php

@@ -0,0 +1,10 @@
+<?php
+
+// autoload_classmap.php @generated by Composer
+
+$vendorDir = dirname(dirname(__FILE__));
+$baseDir = dirname($vendorDir);
+
+return array(
+    'Composer\\InstalledVersions' => $vendorDir . '/composer/InstalledVersions.php',
+);

vendor/composer/autoload_files.php

@@ -0,0 +1,12 @@
+<?php
+
+// autoload_files.php @generated by Composer
+
+$vendorDir = dirname(dirname(__FILE__));
+$baseDir = dirname($vendorDir);
+
+return array(
+    '8653524d908cf23a56335c6d210d6627' => $vendorDir . '/abuyoyo/adminmenupage/wph_admin_page.php',
+    '7166494aeff09009178f278afd86c83f' => $vendorDir . '/yahnis-elsts/plugin-update-checker/load-v4p13.php',
+    'd8f9115e9a479bb7bf2fea8e74fb82f0' => $vendorDir . '/abuyoyo/screen-meta-links/screen-meta-links.php',
+);

vendor/composer/autoload_namespaces.php

@@ -0,0 +1,9 @@
+<?php
+
+// autoload_namespaces.php @generated by Composer
+
+$vendorDir = dirname(dirname(__FILE__));
+$baseDir = dirname($vendorDir);
+
+return array(
+);

vendor/composer/autoload_psr4.php

@@ -0,0 +1,10 @@
+<?php
+
+// autoload_psr4.php @generated by Composer
+
+$vendorDir = dirname(dirname(__FILE__));
+$baseDir = dirname($vendorDir);
+
+return array(
+    'WPHelper\\' => array($vendorDir . '/abuyoyo/adminmenupage/src', $vendorDir . '/abuyoyo/plugincore'),
+);

vendor/composer/autoload_real.php

@@ -0,0 +1,75 @@
+<?php
+
+// autoload_real.php @generated by Composer
+
+class ComposerAutoloaderInit99e41faf4c8cd1b54927a50ca0e7ee5c
+{
+    private static $loader;
+
+    public static function loadClassLoader($class)
+    {
+        if ('Composer\Autoload\ClassLoader' === $class) {
+            require __DIR__ . '/ClassLoader.php';
+        }
+    }
+
+    /**
+     * @return \Composer\Autoload\ClassLoader
+     */
+    public static function getLoader()
+    {
+        if (null !== self::$loader) {
+            return self::$loader;
+        }
+
+        require __DIR__ . '/platform_check.php';
+
+        spl_autoload_register(array('ComposerAutoloaderInit99e41faf4c8cd1b54927a50ca0e7ee5c', 'loadClassLoader'), true, true);
+        self::$loader = $loader = new \Composer\Autoload\ClassLoader(\dirname(\dirname(__FILE__)));
+        spl_autoload_unregister(array('ComposerAutoloaderInit99e41faf4c8cd1b54927a50ca0e7ee5c', 'loadClassLoader'));
+
+        $useStaticLoader = PHP_VERSION_ID >= 50600 && !defined('HHVM_VERSION') && (!function_exists('zend_loader_file_encoded') || !zend_loader_file_encoded());
+        if ($useStaticLoader) {
+            require __DIR__ . '/autoload_static.php';
+
+            call_user_func(\Composer\Autoload\ComposerStaticInit99e41faf4c8cd1b54927a50ca0e7ee5c::getInitializer($loader));
+        } else {
+            $map = require __DIR__ . '/autoload_namespaces.php';
+            foreach ($map as $namespace => $path) {
+                $loader->set($namespace, $path);
+            }
+
+            $map = require __DIR__ . '/autoload_psr4.php';
+            foreach ($map as $namespace => $path) {
+                $loader->setPsr4($namespace, $path);
+            }
+
+            $classMap = require __DIR__ . '/autoload_classmap.php';
+            if ($classMap) {
+                $loader->addClassMap($classMap);
+            }
+        }
+
+        $loader->register(true);
+
+        if ($useStaticLoader) {
+            $includeFiles = Composer\Autoload\ComposerStaticInit99e41faf4c8cd1b54927a50ca0e7ee5c::$files;
+        } else {
+            $includeFiles = require __DIR__ . '/autoload_files.php';
+        }
+        foreach ($includeFiles as $fileIdentifier => $file) {
+            composerRequire99e41faf4c8cd1b54927a50ca0e7ee5c($fileIdentifier, $file);
+        }
+
+        return $loader;
+    }
+}
+
+function composerRequire99e41faf4c8cd1b54927a50ca0e7ee5c($fileIdentifier, $file)
+{
+    if (empty($GLOBALS['__composer_autoload_files'][$fileIdentifier])) {
+        require $file;
+
+        $GLOBALS['__composer_autoload_files'][$fileIdentifier] = true;
+    }
+}

vendor/composer/autoload_static.php

@@ -0,0 +1,43 @@
+<?php
+
+// autoload_static.php @generated by Composer
+
+namespace Composer\Autoload;
+
+class ComposerStaticInit99e41faf4c8cd1b54927a50ca0e7ee5c
+{
+    public static $files = array (
+        '8653524d908cf23a56335c6d210d6627' => __DIR__ . '/..' . '/abuyoyo/adminmenupage/wph_admin_page.php',
+        '7166494aeff09009178f278afd86c83f' => __DIR__ . '/..' . '/yahnis-elsts/plugin-update-checker/load-v4p13.php',
+        'd8f9115e9a479bb7bf2fea8e74fb82f0' => __DIR__ . '/..' . '/abuyoyo/screen-meta-links/screen-meta-links.php',
+    );
+
+    public static $prefixLengthsPsr4 = array (
+        'W' => 
+        array (
+            'WPHelper\\' => 9,
+        ),
+    );
+
+    public static $prefixDirsPsr4 = array (
+        'WPHelper\\' => 
+        array (
+            0 => __DIR__ . '/..' . '/abuyoyo/adminmenupage/src',
+            1 => __DIR__ . '/..' . '/abuyoyo/plugincore',
+        ),
+    );
+
+    public static $classMap = array (
+        'Composer\\InstalledVersions' => __DIR__ . '/..' . '/composer/InstalledVersions.php',
+    );
+
+    public static function getInitializer(ClassLoader $loader)
+    {
+        return \Closure::bind(function () use ($loader) {
+            $loader->prefixLengthsPsr4 = ComposerStaticInit99e41faf4c8cd1b54927a50ca0e7ee5c::$prefixLengthsPsr4;
+            $loader->prefixDirsPsr4 = ComposerStaticInit99e41faf4c8cd1b54927a50ca0e7ee5c::$prefixDirsPsr4;
+            $loader->classMap = ComposerStaticInit99e41faf4c8cd1b54927a50ca0e7ee5c::$classMap;
+
+        }, null, ClassLoader::class);
+    }
+}

vendor/composer/installed.json

@@ -0,0 +1,168 @@
+{
+    "packages": [
+        {
+            "name": "abuyoyo/adminmenupage",
+            "version": "0.20",
+            "version_normalized": "0.20.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/abuyoyo/AdminMenuPage.git",
+                "reference": "07d98f2c1f0b71340aaf0fae0783dfecec201e97"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/abuyoyo/AdminMenuPage/zipball/07d98f2c1f0b71340aaf0fae0783dfecec201e97",
+                "reference": "07d98f2c1f0b71340aaf0fae0783dfecec201e97",
+                "shasum": ""
+            },
+            "suggest": {
+                "abuyoyo/plugincore": "~0.18",
+                "cmb2/cmb2": "~2.9"
+            },
+            "time": "2022-07-28T22:56:37+00:00",
+            "type": "library",
+            "installation-source": "dist",
+            "autoload": {
+                "files": [
+                    "wph_admin_page.php"
+                ],
+                "psr-4": {
+                    "WPHelper\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "description": "WordPress admin menu page helper class",
+            "support": {
+                "issues": "https://github.com/abuyoyo/AdminMenuPage/issues",
+                "source": "https://github.com/abuyoyo/AdminMenuPage/tree/0.20"
+            },
+            "install-path": "../abuyoyo/adminmenupage"
+        },
+        {
+            "name": "abuyoyo/plugincore",
+            "version": "0.20",
+            "version_normalized": "0.20.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/abuyoyo/PluginCore.git",
+                "reference": "0f8de7be654880adc850610f045f22cd7923c3cc"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/abuyoyo/PluginCore/zipball/0f8de7be654880adc850610f045f22cd7923c3cc",
+                "reference": "0f8de7be654880adc850610f045f22cd7923c3cc",
+                "shasum": ""
+            },
+            "require": {
+                "abuyoyo/adminmenupage": "~0.20",
+                "yahnis-elsts/plugin-update-checker": "~4.12"
+            },
+            "time": "2022-07-29T00:00:00+00:00",
+            "type": "library",
+            "installation-source": "dist",
+            "autoload": {
+                "psr-4": {
+                    "WPHelper\\": ""
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "description": "WordPress plugin core helper class",
+            "support": {
+                "issues": "https://github.com/abuyoyo/PluginCore/issues",
+                "source": "https://github.com/abuyoyo/PluginCore/tree/0.20"
+            },
+            "install-path": "../abuyoyo/plugincore"
+        },
+        {
+            "name": "abuyoyo/screen-meta-links",
+            "version": "0.11",
+            "version_normalized": "0.11.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/abuyoyo/screen-meta-links.git",
+                "reference": "04e3c892f0c6095b4c31a489e06336f0917128d3"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/abuyoyo/screen-meta-links/zipball/04e3c892f0c6095b4c31a489e06336f0917128d3",
+                "reference": "04e3c892f0c6095b4c31a489e06336f0917128d3",
+                "shasum": ""
+            },
+            "time": "2022-05-18T01:18:24+00:00",
+            "type": "library",
+            "installation-source": "dist",
+            "autoload": {
+                "files": [
+                    "screen-meta-links.php"
+                ]
+            },
+            "description": "API for adding custom screen-meta-links alongside the 'Screen Options' and 'Help' links.",
+            "support": {
+                "source": "https://github.com/abuyoyo/screen-meta-links/tree/0.11",
+                "issues": "https://github.com/abuyoyo/screen-meta-links/issues"
+            },
+            "install-path": "../abuyoyo/screen-meta-links"
+        },
+        {
+            "name": "yahnis-elsts/plugin-update-checker",
+            "version": "v4.13",
+            "version_normalized": "4.13.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/YahnisElsts/plugin-update-checker.git",
+                "reference": "6eb27a6911e0e0880d09e5b11f577d3f688f7da7"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/YahnisElsts/plugin-update-checker/zipball/6eb27a6911e0e0880d09e5b11f577d3f688f7da7",
+                "reference": "6eb27a6911e0e0880d09e5b11f577d3f688f7da7",
+                "shasum": ""
+            },
+            "require": {
+                "ext-json": "*",
+                "php": ">=5.2.0"
+            },
+            "time": "2022-07-29T12:36:25+00:00",
+            "type": "library",
+            "installation-source": "dist",
+            "autoload": {
+                "files": [
+                    "load-v4p13.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Yahnis Elsts",
+                    "email": "whiteshadow@w-shadow.com",
+                    "homepage": "http://w-shadow.com/",
+                    "role": "Developer"
+                }
+            ],
+            "description": "A custom update checker for WordPress plugins and themes. Useful if you can't host your plugin in the official WP repository but still want it to support automatic updates.",
+            "homepage": "https://github.com/YahnisElsts/plugin-update-checker/",
+            "keywords": [
+                "automatic updates",
+                "plugin updates",
+                "theme updates",
+                "wordpress"
+            ],
+            "support": {
+                "issues": "https://github.com/YahnisElsts/plugin-update-checker/issues",
+                "source": "https://github.com/YahnisElsts/plugin-update-checker/tree/v4.13"
+            },
+            "install-path": "../yahnis-elsts/plugin-update-checker"
+        }
+    ],
+    "dev": true,
+    "dev-package-names": []
+}

vendor/composer/installed.php

@@ -0,0 +1,59 @@
+<?php return array(
+    'root' => array(
+        'pretty_version' => 'dev-next',
+        'version' => 'dev-next',
+        'type' => 'wordpress-plugin',
+        'install_path' => __DIR__ . '/../../',
+        'aliases' => array(),
+        'reference' => '3ef2aa48dd941df15c08c6f17cd649c9754fa1fc',
+        'name' => 'abuyoyo/notice-manager',
+        'dev' => true,
+    ),
+    'versions' => array(
+        'abuyoyo/adminmenupage' => array(
+            'pretty_version' => '0.20',
+            'version' => '0.20.0.0',
+            'type' => 'library',
+            'install_path' => __DIR__ . '/../abuyoyo/adminmenupage',
+            'aliases' => array(),
+            'reference' => '07d98f2c1f0b71340aaf0fae0783dfecec201e97',
+            'dev_requirement' => false,
+        ),
+        'abuyoyo/notice-manager' => array(
+            'pretty_version' => 'dev-next',
+            'version' => 'dev-next',
+            'type' => 'wordpress-plugin',
+            'install_path' => __DIR__ . '/../../',
+            'aliases' => array(),
+            'reference' => '3ef2aa48dd941df15c08c6f17cd649c9754fa1fc',
+            'dev_requirement' => false,
+        ),
+        'abuyoyo/plugincore' => array(
+            'pretty_version' => '0.20',
+            'version' => '0.20.0.0',
+            'type' => 'library',
+            'install_path' => __DIR__ . '/../abuyoyo/plugincore',
+            'aliases' => array(),
+            'reference' => '0f8de7be654880adc850610f045f22cd7923c3cc',
+            'dev_requirement' => false,
+        ),
+        'abuyoyo/screen-meta-links' => array(
+            'pretty_version' => '0.11',
+            'version' => '0.11.0.0',
+            'type' => 'library',
+            'install_path' => __DIR__ . '/../abuyoyo/screen-meta-links',
+            'aliases' => array(),
+            'reference' => '04e3c892f0c6095b4c31a489e06336f0917128d3',
+            'dev_requirement' => false,
+        ),
+        'yahnis-elsts/plugin-update-checker' => array(
+            'pretty_version' => 'v4.13',
+            'version' => '4.13.0.0',
+            'type' => 'library',
+            'install_path' => __DIR__ . '/../yahnis-elsts/plugin-update-checker',
+            'aliases' => array(),
+            'reference' => '6eb27a6911e0e0880d09e5b11f577d3f688f7da7',
+            'dev_requirement' => false,
+        ),
+    ),
+);

vendor/composer/platform_check.php

@@ -0,0 +1,26 @@
+<?php
+
+// platform_check.php @generated by Composer
+
+$issues = array();
+
+if (!(PHP_VERSION_ID >= 50200)) {
+    $issues[] = 'Your Composer dependencies require a PHP version ">= 5.2.0". You are running ' . PHP_VERSION . '.';
+}
+
+if ($issues) {
+    if (!headers_sent()) {
+        header('HTTP/1.1 500 Internal Server Error');
+    }
+    if (!ini_get('display_errors')) {
+        if (PHP_SAPI === 'cli' || PHP_SAPI === 'phpdbg') {
+            fwrite(STDERR, 'Composer detected issues in your platform:' . PHP_EOL.PHP_EOL . implode(PHP_EOL, $issues) . PHP_EOL.PHP_EOL);
+        } elseif (!headers_sent()) {
+            echo 'Composer detected issues in your platform:' . PHP_EOL.PHP_EOL . str_replace('You are running '.PHP_VERSION.'.', '', implode(PHP_EOL, $issues)) . PHP_EOL.PHP_EOL;
+        }
+    }
+    trigger_error(
+        'Composer detected issues in your platform: ' . implode(' ', $issues),
+        E_USER_ERROR
+    );
+}

vendor/yahnis-elsts/plugin-update-checker/.editorconfig

@@ -0,0 +1,15 @@
+[*]
+charset=utf-8
+end_of_line=lf
+insert_final_newline=false
+indent_style=tab
+tab_width=4
+
+[{phpunit.xml.dist,*.jhm,*.xslt,*.xul,*.rng,*.xsl,*.xsd,*.ant,*.tld,*.fxml,*.jrxml,*.xml,*.jnlp,*.wsdl}]
+indent_style=space
+indent_size=4
+
+[*.svg]
+indent_style=space
+indent_size=4
+

vendor/yahnis-elsts/plugin-update-checker/.gitignore

@@ -0,0 +1,40 @@
+# Created by .ignore support plugin (hsz.mobi)
+### JetBrains template
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+# The entire IDEA/PhpStorm directory
+.idea/
+
+# CMake
+cmake-build-*/
+
+# Mongo Explorer plugin
+.idea/**/mongoSettings.xml
+
+# File-based project format
+*.iws
+
+# IntelliJ
+out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+# Editor-based Rest Client
+.idea/httpRequests
+
+# Android studio 3.1+ serialized cache file
+.idea/caches/build_file_checksums.ser

vendor/yahnis-elsts/plugin-update-checker/Puc/v4/Factory.php

@@ -0,0 +1,6 @@
+<?php
+if ( !class_exists('Puc_v4_Factory', false) ):
+
+	class Puc_v4_Factory extends Puc_v4p13_Factory { }
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/Autoloader.php

@@ -0,0 +1,70 @@
+<?php
+
+if ( !class_exists('Puc_v4p13_Autoloader', false) ):
+
+	class Puc_v4p13_Autoloader {
+		private $prefix = '';
+		private $rootDir = '';
+		private $libraryDir = '';
+
+		private $staticMap;
+
+		public function __construct() {
+			$this->rootDir = dirname(__FILE__) . '/';
+
+			if ( version_compare(PHP_VERSION, '5.3', '>=') && __NAMESPACE__ ) {
+				$namespaceWithSlash = __NAMESPACE__ . '\\';
+			} else {
+				$namespaceWithSlash = '';
+			}
+
+			$nameParts = explode('_', substr(__CLASS__, strlen($namespaceWithSlash)), 3);
+			$this->prefix = $namespaceWithSlash . $nameParts[0] . '_' . $nameParts[1] . '_';
+
+			$this->libraryDir = $this->rootDir . '../..';
+			if ( !self::isPhar() ) {
+				$this->libraryDir = realpath($this->libraryDir);
+			}
+			$this->libraryDir = $this->libraryDir . '/';
+
+			$this->staticMap = array(
+				$namespaceWithSlash . 'PucReadmeParser' => 'vendor/PucReadmeParser.php',
+				$namespaceWithSlash . 'Parsedown'       => 'vendor/Parsedown.php',
+				$namespaceWithSlash . 'Puc_v4_Factory'  => 'Puc/v4/Factory.php',
+			);
+
+			spl_autoload_register(array($this, 'autoload'));
+		}
+
+		/**
+		 * Determine if this file is running as part of a Phar archive.
+		 *
+		 * @return bool
+		 */
+		private static function isPhar() {
+			//Check if the current file path starts with "phar://".
+			static $pharProtocol = 'phar://';
+			return (substr(__FILE__, 0, strlen($pharProtocol)) === $pharProtocol);
+		}
+
+		public function autoload($className) {
+			if ( isset($this->staticMap[$className]) && file_exists($this->libraryDir . $this->staticMap[$className]) ) {
+				/** @noinspection PhpIncludeInspection */
+				include ($this->libraryDir . $this->staticMap[$className]);
+				return;
+			}
+
+			if (strpos($className, $this->prefix) === 0) {
+				$path = substr($className, strlen($this->prefix));
+				$path = str_replace('_', '/', $path);
+				$path = $this->rootDir . $path . '.php';
+
+				if (file_exists($path)) {
+					/** @noinspection PhpIncludeInspection */
+					include $path;
+				}
+			}
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/DebugBar/Extension.php

@@ -0,0 +1,190 @@
+<?php
+if ( !class_exists('Puc_v4p13_DebugBar_Extension', false) ):
+
+	class Puc_v4p13_DebugBar_Extension {
+		const RESPONSE_BODY_LENGTH_LIMIT = 4000;
+
+		/** @var Puc_v4p13_UpdateChecker */
+		protected $updateChecker;
+		protected $panelClass = 'Puc_v4p13_DebugBar_Panel';
+
+		public function __construct($updateChecker, $panelClass = null) {
+			$this->updateChecker = $updateChecker;
+			if ( isset($panelClass) ) {
+				$this->panelClass = $panelClass;
+			}
+
+			if ( version_compare(PHP_VERSION, '5.3', '>=') && (strpos($this->panelClass, '\\') === false) ) {
+				$this->panelClass = __NAMESPACE__ . '\\' . $this->panelClass;
+			}
+
+			add_filter('debug_bar_panels', array($this, 'addDebugBarPanel'));
+			add_action('debug_bar_enqueue_scripts', array($this, 'enqueuePanelDependencies'));
+
+			add_action('wp_ajax_puc_v4_debug_check_now', array($this, 'ajaxCheckNow'));
+		}
+
+		/**
+		 * Register the PUC Debug Bar panel.
+		 *
+		 * @param array $panels
+		 * @return array
+		 */
+		public function addDebugBarPanel($panels) {
+			if ( $this->updateChecker->userCanInstallUpdates() ) {
+				$panels[] = new $this->panelClass($this->updateChecker);
+			}
+			return $panels;
+		}
+
+		/**
+		 * Enqueue our Debug Bar scripts and styles.
+		 */
+		public function enqueuePanelDependencies() {
+			wp_enqueue_style(
+				'puc-debug-bar-style-v4',
+				$this->getLibraryUrl("/css/puc-debug-bar.css"),
+				array('debug-bar'),
+				'20171124'
+			);
+
+			wp_enqueue_script(
+				'puc-debug-bar-js-v4',
+				$this->getLibraryUrl("/js/debug-bar.js"),
+				array('jquery'),
+				'20201209'
+			);
+		}
+
+		/**
+		 * Run an update check and output the result. Useful for making sure that
+		 * the update checking process works as expected.
+		 */
+		public function ajaxCheckNow() {
+			if ( $_POST['uid'] !== $this->updateChecker->getUniqueName('uid') ) {
+				return;
+			}
+			$this->preAjaxRequest();
+			$update = $this->updateChecker->checkForUpdates();
+			if ( $update !== null ) {
+				echo "An update is available:";
+				echo '<pre>', htmlentities(print_r($update, true)), '</pre>';
+			} else {
+				echo 'No updates found.';
+			}
+
+			$errors = $this->updateChecker->getLastRequestApiErrors();
+			if ( !empty($errors) ) {
+				printf('<p>The update checker encountered %d API error%s.</p>', count($errors), (count($errors) > 1) ? 's' : '');
+
+				foreach (array_values($errors) as $num => $item) {
+					$wpError = $item['error'];
+					/** @var WP_Error $wpError */
+					printf('<h4>%d) %s</h4>', $num + 1, esc_html($wpError->get_error_message()));
+
+					echo '<dl>';
+					printf('<dt>Error code:</dt><dd><code>%s</code></dd>', esc_html($wpError->get_error_code()));
+
+					if ( isset($item['url']) ) {
+						printf('<dt>Requested URL:</dt><dd><code>%s</code></dd>', esc_html($item['url']));
+					}
+
+					if ( isset($item['httpResponse']) ) {
+						if ( is_wp_error($item['httpResponse']) ) {
+							$httpError = $item['httpResponse'];
+							/** @var WP_Error $httpError */
+							printf(
+								'<dt>WordPress HTTP API error:</dt><dd>%s (<code>%s</code>)</dd>',
+								esc_html($httpError->get_error_message()),
+								esc_html($httpError->get_error_code())
+							);
+						} else {
+							//Status code.
+							printf(
+								'<dt>HTTP status:</dt><dd><code>%d %s</code></dd>',
+								wp_remote_retrieve_response_code($item['httpResponse']),
+								wp_remote_retrieve_response_message($item['httpResponse'])
+							);
+
+							//Headers.
+							echo '<dt>Response headers:</dt><dd><pre>';
+							foreach (wp_remote_retrieve_headers($item['httpResponse']) as $name => $value) {
+								printf("%s: %s\n", esc_html($name), esc_html($value));
+							}
+							echo '</pre></dd>';
+
+							//Body.
+							$body = wp_remote_retrieve_body($item['httpResponse']);
+							if ( $body === '' ) {
+								$body = '(Empty response.)';
+							} else if ( strlen($body) > self::RESPONSE_BODY_LENGTH_LIMIT ) {
+								$length = strlen($body);
+								$body = substr($body, 0, self::RESPONSE_BODY_LENGTH_LIMIT)
+									. sprintf("\n(Long string truncated. Total length: %d bytes.)", $length);
+							}
+
+							printf('<dt>Response body:</dt><dd><pre>%s</pre></dd>', esc_html($body));
+						}
+					}
+					echo '<dl>';
+				}
+			}
+
+			exit;
+		}
+
+		/**
+		 * Check access permissions and enable error display (for debugging).
+		 */
+		protected function preAjaxRequest() {
+			if ( !$this->updateChecker->userCanInstallUpdates() ) {
+				die('Access denied');
+			}
+			check_ajax_referer('puc-ajax');
+
+			error_reporting(E_ALL);
+			@ini_set('display_errors', 'On');
+		}
+
+		/**
+		 * Remove hooks that were added by this extension.
+		 */
+		public function removeHooks() {
+			remove_filter('debug_bar_panels', array($this, 'addDebugBarPanel'));
+			remove_action('debug_bar_enqueue_scripts', array($this, 'enqueuePanelDependencies'));
+			remove_action('wp_ajax_puc_v4_debug_check_now', array($this, 'ajaxCheckNow'));
+		}
+
+		/**
+		 * @param string $filePath
+		 * @return string
+		 */
+		private function getLibraryUrl($filePath) {
+			$absolutePath = realpath(dirname(__FILE__) . '/../../../' . ltrim($filePath, '/'));
+
+			//Where is the library located inside the WordPress directory structure?
+			$absolutePath = Puc_v4p13_Factory::normalizePath($absolutePath);
+
+			$pluginDir = Puc_v4p13_Factory::normalizePath(WP_PLUGIN_DIR);
+			$muPluginDir = Puc_v4p13_Factory::normalizePath(WPMU_PLUGIN_DIR);
+			$themeDir = Puc_v4p13_Factory::normalizePath(get_theme_root());
+
+			if ( (strpos($absolutePath, $pluginDir) === 0) || (strpos($absolutePath, $muPluginDir) === 0) ) {
+				//It's part of a plugin.
+				return plugins_url(basename($absolutePath), $absolutePath);
+			} else if ( strpos($absolutePath, $themeDir) === 0 ) {
+				//It's part of a theme.
+				$relativePath = substr($absolutePath, strlen($themeDir) + 1);
+				$template = substr($relativePath, 0, strpos($relativePath, '/'));
+				$baseUrl = get_theme_root_uri($template);
+
+				if ( !empty($baseUrl) && $relativePath ) {
+					return $baseUrl . '/' . $relativePath;
+				}
+			}
+
+			return '';
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/DebugBar/Panel.php

@@ -0,0 +1,165 @@
+<?php
+
+if ( !class_exists('Puc_v4p13_DebugBar_Panel', false) && class_exists('Debug_Bar_Panel', false) ):
+
+	class Puc_v4p13_DebugBar_Panel extends Debug_Bar_Panel {
+		/** @var Puc_v4p13_UpdateChecker */
+		protected $updateChecker;
+
+		private $responseBox = '<div class="puc-ajax-response" style="display: none;"></div>';
+
+		public function __construct($updateChecker) {
+			$this->updateChecker = $updateChecker;
+			$title = sprintf(
+				'<span class="puc-debug-menu-link-%s">PUC (%s)</span>',
+				esc_attr($this->updateChecker->getUniqueName('uid')),
+				$this->updateChecker->slug
+			);
+			parent::__construct($title);
+		}
+
+		public function render() {
+			printf(
+				'<div class="puc-debug-bar-panel-v4" id="%1$s" data-slug="%2$s" data-uid="%3$s" data-nonce="%4$s">',
+				esc_attr($this->updateChecker->getUniqueName('debug-bar-panel')),
+				esc_attr($this->updateChecker->slug),
+				esc_attr($this->updateChecker->getUniqueName('uid')),
+				esc_attr(wp_create_nonce('puc-ajax'))
+			);
+
+			$this->displayConfiguration();
+			$this->displayStatus();
+			$this->displayCurrentUpdate();
+
+			echo '</div>';
+		}
+
+		private function displayConfiguration() {
+			echo '<h3>Configuration</h3>';
+			echo '<table class="puc-debug-data">';
+			$this->displayConfigHeader();
+			$this->row('Slug', htmlentities($this->updateChecker->slug));
+			$this->row('DB option', htmlentities($this->updateChecker->optionName));
+
+			$requestInfoButton = $this->getMetadataButton();
+			$this->row('Metadata URL', htmlentities($this->updateChecker->metadataUrl) . ' ' . $requestInfoButton . $this->responseBox);
+
+			$scheduler = $this->updateChecker->scheduler;
+			if ( $scheduler->checkPeriod > 0 ) {
+				$this->row('Automatic checks', 'Every ' . $scheduler->checkPeriod . ' hours');
+			} else {
+				$this->row('Automatic checks', 'Disabled');
+			}
+
+			if ( isset($scheduler->throttleRedundantChecks) ) {
+				if ( $scheduler->throttleRedundantChecks && ($scheduler->checkPeriod > 0) ) {
+					$this->row(
+						'Throttling',
+						sprintf(
+							'Enabled. If an update is already available, check for updates every %1$d hours instead of every %2$d hours.',
+							$scheduler->throttledCheckPeriod,
+							$scheduler->checkPeriod
+						)
+					);
+				} else {
+					$this->row('Throttling', 'Disabled');
+				}
+			}
+
+			$this->updateChecker->onDisplayConfiguration($this);
+
+			echo '</table>';
+		}
+
+		protected function displayConfigHeader() {
+			//Do nothing. This should be implemented in subclasses.
+		}
+
+		protected function getMetadataButton() {
+			return '';
+		}
+
+		private function displayStatus() {
+			echo '<h3>Status</h3>';
+			echo '<table class="puc-debug-data">';
+			$state = $this->updateChecker->getUpdateState();
+			$checkNowButton = '';
+			if ( function_exists('get_submit_button')  ) {
+				$checkNowButton = get_submit_button(
+					'Check Now',
+					'secondary',
+					'puc-check-now-button',
+					false,
+					array('id' => $this->updateChecker->getUniqueName('check-now-button'))
+				);
+			}
+
+			if ( $state->getLastCheck() > 0 ) {
+				$this->row('Last check', $this->formatTimeWithDelta($state->getLastCheck()) . ' ' . $checkNowButton . $this->responseBox);
+			} else {
+				$this->row('Last check', 'Never');
+			}
+
+			$nextCheck = wp_next_scheduled($this->updateChecker->scheduler->getCronHookName());
+			$this->row('Next automatic check', $this->formatTimeWithDelta($nextCheck));
+
+			if ( $state->getCheckedVersion() !== '' ) {
+				$this->row('Checked version', htmlentities($state->getCheckedVersion()));
+				$this->row('Cached update', $state->getUpdate());
+			}
+			$this->row('Update checker class', htmlentities(get_class($this->updateChecker)));
+			echo '</table>';
+		}
+
+		private function displayCurrentUpdate() {
+			$update = $this->updateChecker->getUpdate();
+			if ( $update !== null ) {
+				echo '<h3>An Update Is Available</h3>';
+				echo '<table class="puc-debug-data">';
+				$fields = $this->getUpdateFields();
+				foreach($fields as $field) {
+					if ( property_exists($update, $field) ) {
+						$this->row(ucwords(str_replace('_', ' ', $field)), htmlentities($update->$field));
+					}
+				}
+				echo '</table>';
+			} else {
+				echo '<h3>No updates currently available</h3>';
+			}
+		}
+
+		protected function getUpdateFields() {
+			return array('version', 'download_url', 'slug',);
+		}
+
+		private function formatTimeWithDelta($unixTime) {
+			if ( empty($unixTime) ) {
+				return 'Never';
+			}
+
+			$delta = time() - $unixTime;
+			$result = human_time_diff(time(), $unixTime);
+			if ( $delta < 0 ) {
+				$result = 'after ' . $result;
+			} else {
+				$result = $result . ' ago';
+			}
+			$result .= ' (' . $this->formatTimestamp($unixTime) . ')';
+			return $result;
+		}
+
+		private function formatTimestamp($unixTime) {
+			return gmdate('Y-m-d H:i:s', $unixTime + (get_option('gmt_offset') * 3600));
+		}
+
+		public function row($name, $value) {
+			if ( is_object($value) || is_array($value) ) {
+				$value = '<pre>' . htmlentities(print_r($value, true)) . '</pre>';
+			} else if ($value === null) {
+				$value = '<code>null</code>';
+			}
+			printf('<tr><th scope="row">%1$s</th> <td>%2$s</td></tr>', $name, $value);
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/DebugBar/PluginExtension.php

@@ -0,0 +1,33 @@
+<?php
+if ( !class_exists('Puc_v4p13_DebugBar_PluginExtension', false) ):
+
+	class Puc_v4p13_DebugBar_PluginExtension extends Puc_v4p13_DebugBar_Extension {
+		/** @var Puc_v4p13_Plugin_UpdateChecker */
+		protected $updateChecker;
+
+		public function __construct($updateChecker) {
+			parent::__construct($updateChecker, 'Puc_v4p13_DebugBar_PluginPanel');
+
+			add_action('wp_ajax_puc_v4_debug_request_info', array($this, 'ajaxRequestInfo'));
+		}
+
+		/**
+		 * Request plugin info and output it.
+		 */
+		public function ajaxRequestInfo() {
+			if ( $_POST['uid'] !== $this->updateChecker->getUniqueName('uid') ) {
+				return;
+			}
+			$this->preAjaxRequest();
+			$info = $this->updateChecker->requestInfo();
+			if ( $info !== null ) {
+				echo 'Successfully retrieved plugin info from the metadata URL:';
+				echo '<pre>', htmlentities(print_r($info, true)), '</pre>';
+			} else {
+				echo 'Failed to retrieve plugin info from the metadata URL.';
+			}
+			exit;
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/DebugBar/PluginPanel.php

@@ -0,0 +1,38 @@
+<?php
+
+if ( !class_exists('Puc_v4p13_DebugBar_PluginPanel', false) ):
+
+	class Puc_v4p13_DebugBar_PluginPanel extends Puc_v4p13_DebugBar_Panel {
+		/**
+		 * @var Puc_v4p13_Plugin_UpdateChecker
+		 */
+		protected $updateChecker;
+
+		protected function displayConfigHeader() {
+			$this->row('Plugin file', htmlentities($this->updateChecker->pluginFile));
+			parent::displayConfigHeader();
+		}
+
+		protected function getMetadataButton() {
+			$requestInfoButton = '';
+			if ( function_exists('get_submit_button') ) {
+				$requestInfoButton = get_submit_button(
+					'Request Info',
+					'secondary',
+					'puc-request-info-button',
+					false,
+					array('id' => $this->updateChecker->getUniqueName('request-info-button'))
+				);
+			}
+			return $requestInfoButton;
+		}
+
+		protected function getUpdateFields() {
+			return array_merge(
+				parent::getUpdateFields(),
+				array('homepage', 'upgrade_notice', 'tested',)
+			);
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/DebugBar/ThemePanel.php

@@ -0,0 +1,21 @@
+<?php
+
+if ( !class_exists('Puc_v4p13_DebugBar_ThemePanel', false) ):
+
+	class Puc_v4p13_DebugBar_ThemePanel extends Puc_v4p13_DebugBar_Panel {
+		/**
+		 * @var Puc_v4p13_Theme_UpdateChecker
+		 */
+		protected $updateChecker;
+
+		protected function displayConfigHeader() {
+			$this->row('Theme directory', htmlentities($this->updateChecker->directoryName));
+			parent::displayConfigHeader();
+		}
+
+		protected function getUpdateFields() {
+			return array_merge(parent::getUpdateFields(), array('details_url'));
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/Factory.php

@@ -0,0 +1,369 @@
+<?php
+if ( !class_exists('Puc_v4p13_Factory', false) ):
+
+	/**
+	 * A factory that builds update checker instances.
+	 *
+	 * When multiple versions of the same class have been loaded (e.g. PluginUpdateChecker 4.0
+	 * and 4.1), this factory will always use the latest available minor version. Register class
+	 * versions by calling {@link PucFactory::addVersion()}.
+	 *
+	 * At the moment it can only build instances of the UpdateChecker class. Other classes are
+	 * intended mainly for internal use and refer directly to specific implementations.
+	 */
+	class Puc_v4p13_Factory {
+		protected static $classVersions = array();
+		protected static $sorted = false;
+
+		protected static $myMajorVersion = '';
+		protected static $latestCompatibleVersion = '';
+
+		/**
+		 * A wrapper method for buildUpdateChecker() that reads the metadata URL from the plugin or theme header.
+		 *
+		 * @param string $fullPath Full path to the main plugin file or the theme's style.css.
+		 * @param array $args Optional arguments. Keys should match the argument names of the buildUpdateChecker() method.
+		 * @return Puc_v4p13_Plugin_UpdateChecker|Puc_v4p13_Theme_UpdateChecker|Puc_v4p13_Vcs_BaseChecker
+		 */
+		public static function buildFromHeader($fullPath, $args = array()) {
+			$fullPath = self::normalizePath($fullPath);
+
+			//Set up defaults.
+			$defaults = array(
+				'metadataUrl'  => '',
+				'slug'         => '',
+				'checkPeriod'  => 12,
+				'optionName'   => '',
+				'muPluginFile' => '',
+			);
+			$args = array_merge($defaults, array_intersect_key($args, $defaults));
+			extract($args, EXTR_SKIP);
+
+			//Check for the service URI
+			if ( empty($metadataUrl) ) {
+				$metadataUrl = self::getServiceURI($fullPath);
+			}
+
+			/** @noinspection PhpUndefinedVariableInspection These variables are created by extract(), above. */
+			return self::buildUpdateChecker($metadataUrl, $fullPath, $slug, $checkPeriod, $optionName, $muPluginFile);
+		}
+
+		/**
+		 * Create a new instance of the update checker.
+		 *
+		 * This method automatically detects if you're using it for a plugin or a theme and chooses
+		 * the appropriate implementation for your update source (JSON file, GitHub, BitBucket, etc).
+		 *
+		 * @see Puc_v4p13_UpdateChecker::__construct
+		 *
+		 * @param string $metadataUrl The URL of the metadata file, a GitHub repository, or another supported update source.
+		 * @param string $fullPath Full path to the main plugin file or to the theme directory.
+		 * @param string $slug Custom slug. Defaults to the name of the main plugin file or the theme directory.
+		 * @param int $checkPeriod How often to check for updates (in hours).
+		 * @param string $optionName Where to store book-keeping info about update checks.
+		 * @param string $muPluginFile The plugin filename relative to the mu-plugins directory.
+		 * @return Puc_v4p13_Plugin_UpdateChecker|Puc_v4p13_Theme_UpdateChecker|Puc_v4p13_Vcs_BaseChecker
+		 */
+		public static function buildUpdateChecker($metadataUrl, $fullPath, $slug = '', $checkPeriod = 12, $optionName = '', $muPluginFile = '') {
+			$fullPath = self::normalizePath($fullPath);
+			$id = null;
+
+			//Plugin or theme?
+			$themeDirectory = self::getThemeDirectoryName($fullPath);
+			if ( self::isPluginFile($fullPath) ) {
+				$type = 'Plugin';
+				$id = $fullPath;
+			} else if ( $themeDirectory !== null ) {
+				$type = 'Theme';
+				$id = $themeDirectory;
+			} else {
+				throw new RuntimeException(sprintf(
+					'The update checker cannot determine if "%s" is a plugin or a theme. ' .
+					'This is a bug. Please contact the PUC developer.',
+					htmlentities($fullPath)
+				));
+			}
+
+			//Which hosting service does the URL point to?
+			$service = self::getVcsService($metadataUrl);
+
+			$apiClass = null;
+			if ( empty($service) ) {
+				//The default is to get update information from a remote JSON file.
+				$checkerClass = $type . '_UpdateChecker';
+			} else {
+				//You can also use a VCS repository like GitHub.
+				$checkerClass = 'Vcs_' . $type . 'UpdateChecker';
+				$apiClass = $service . 'Api';
+			}
+
+			$checkerClass = self::getCompatibleClassVersion($checkerClass);
+			if ( $checkerClass === null ) {
+				trigger_error(
+					sprintf(
+						'PUC %s does not support updates for %ss %s',
+						htmlentities(self::$latestCompatibleVersion),
+						strtolower($type),
+						$service ? ('hosted on ' . htmlentities($service)) : 'using JSON metadata'
+					),
+					E_USER_ERROR
+				);
+				return null;
+			}
+
+			//Add the current namespace to the class name(s).
+			if ( version_compare(PHP_VERSION, '5.3', '>=') ) {
+				$checkerClass = __NAMESPACE__ . '\\' . $checkerClass;
+			}
+
+			if ( !isset($apiClass) ) {
+				//Plain old update checker.
+				return new $checkerClass($metadataUrl, $id, $slug, $checkPeriod, $optionName, $muPluginFile);
+			} else {
+				//VCS checker + an API client.
+				$apiClass = self::getCompatibleClassVersion($apiClass);
+				if ( $apiClass === null ) {
+					trigger_error(sprintf(
+						'PUC %s does not support %s',
+						htmlentities(self::$latestCompatibleVersion),
+						htmlentities($service)
+					), E_USER_ERROR);
+					return null;
+				}
+
+				if ( version_compare(PHP_VERSION, '5.3', '>=') && (strpos($apiClass, '\\') === false) ) {
+					$apiClass = __NAMESPACE__ . '\\' . $apiClass;
+				}
+
+				return new $checkerClass(
+					new $apiClass($metadataUrl),
+					$id,
+					$slug,
+					$checkPeriod,
+					$optionName,
+					$muPluginFile
+				);
+			}
+		}
+
+		/**
+		 *
+		 * Normalize a filesystem path. Introduced in WP 3.9.
+		 * Copying here allows use of the class on earlier versions.
+		 * This version adapted from WP 4.8.2 (unchanged since 4.5.0)
+		 *
+		 * @param string $path Path to normalize.
+		 * @return string Normalized path.
+		 */
+		public static function normalizePath($path) {
+			if ( function_exists('wp_normalize_path') ) {
+				return wp_normalize_path($path);
+			}
+			$path = str_replace('\\', '/', $path);
+			$path = preg_replace('|(?<=.)/+|', '/', $path);
+			if ( substr($path, 1, 1) === ':' ) {
+				$path = ucfirst($path);
+			}
+			return $path;
+		}
+
+		/**
+		 * Check if the path points to a plugin file.
+		 *
+		 * @param string $absolutePath Normalized path.
+		 * @return bool
+		 */
+		protected static function isPluginFile($absolutePath) {
+			//Is the file inside the "plugins" or "mu-plugins" directory?
+			$pluginDir = self::normalizePath(WP_PLUGIN_DIR);
+			$muPluginDir = self::normalizePath(WPMU_PLUGIN_DIR);
+			if ( (strpos($absolutePath, $pluginDir) === 0) || (strpos($absolutePath, $muPluginDir) === 0) ) {
+				return true;
+			}
+
+			//Is it a file at all? Caution: is_file() can fail if the parent dir. doesn't have the +x permission set.
+			if ( !is_file($absolutePath) ) {
+				return false;
+			}
+
+			//Does it have a valid plugin header?
+			//This is a last-ditch check for plugins symlinked from outside the WP root.
+			if ( function_exists('get_file_data') ) {
+				$headers = get_file_data($absolutePath, array('Name' => 'Plugin Name'), 'plugin');
+				return !empty($headers['Name']);
+			}
+
+			return false;
+		}
+
+		/**
+		 * Get the name of the theme's directory from a full path to a file inside that directory.
+		 * E.g. "/abc/public_html/wp-content/themes/foo/whatever.php" => "foo".
+		 *
+		 * Note that subdirectories are currently not supported. For example,
+		 * "/xyz/wp-content/themes/my-theme/includes/whatever.php" => NULL.
+		 *
+		 * @param string $absolutePath Normalized path.
+		 * @return string|null Directory name, or NULL if the path doesn't point to a theme.
+		 */
+		protected static function getThemeDirectoryName($absolutePath) {
+			if ( is_file($absolutePath) ) {
+				$absolutePath = dirname($absolutePath);
+			}
+
+			if ( file_exists($absolutePath . '/style.css') ) {
+				return basename($absolutePath);
+			}
+			return null;
+		}
+
+		/**
+		 * Get the service URI from the file header.
+		 *
+		 * @param string $fullPath
+		 * @return string
+		 */
+		private static function getServiceURI($fullPath) {
+			//Look for the URI
+			if ( is_readable($fullPath) ) {
+				$seek = array(
+					'github' => 'GitHub URI',
+					'gitlab' => 'GitLab URI',
+					'bucket' => 'BitBucket URI',
+				);
+				$seek = apply_filters('puc_get_source_uri', $seek);
+				$data = get_file_data($fullPath, $seek);
+				foreach ($data as $key => $uri) {
+					if ( $uri ) {
+						return $uri;
+					}
+				}
+			}
+
+			//URI was not found so throw an error.
+			throw new RuntimeException(
+				sprintf('Unable to locate URI in header of "%s"', htmlentities($fullPath))
+			);
+		}
+
+		/**
+		 * Get the name of the hosting service that the URL points to.
+		 *
+		 * @param string $metadataUrl
+		 * @return string|null
+		 */
+		private static function getVcsService($metadataUrl) {
+			$service = null;
+
+			//Which hosting service does the URL point to?
+			$host = parse_url($metadataUrl, PHP_URL_HOST);
+			$path = parse_url($metadataUrl, PHP_URL_PATH);
+
+			//Check if the path looks like "/user-name/repository".
+			//For GitLab.com it can also be "/user/group1/group2/.../repository".
+			$repoRegex = '@^/?([^/]+?)/([^/#?&]+?)/?$@';
+			if ( $host === 'gitlab.com' ) {
+				$repoRegex = '@^/?(?:[^/#?&]++/){1,20}(?:[^/#?&]++)/?$@';
+			}
+			if ( preg_match($repoRegex, $path) ) {
+				$knownServices = array(
+					'github.com' => 'GitHub',
+					'bitbucket.org' => 'BitBucket',
+					'gitlab.com' => 'GitLab',
+				);
+				if ( isset($knownServices[$host]) ) {
+					$service = $knownServices[$host];
+				}
+			}
+
+			return apply_filters('puc_get_vcs_service', $service, $host, $path, $metadataUrl);
+		}
+
+		/**
+		 * Get the latest version of the specified class that has the same major version number
+		 * as this factory class.
+		 *
+		 * @param string $class Partial class name.
+		 * @return string|null Full class name.
+		 */
+		protected static function getCompatibleClassVersion($class) {
+			if ( isset(self::$classVersions[$class][self::$latestCompatibleVersion]) ) {
+				return self::$classVersions[$class][self::$latestCompatibleVersion];
+			}
+			return null;
+		}
+
+		/**
+		 * Get the specific class name for the latest available version of a class.
+		 *
+		 * @param string $class
+		 * @return null|string
+		 */
+		public static function getLatestClassVersion($class) {
+			if ( !self::$sorted ) {
+				self::sortVersions();
+			}
+
+			if ( isset(self::$classVersions[$class]) ) {
+				return reset(self::$classVersions[$class]);
+			} else {
+				return null;
+			}
+		}
+
+		/**
+		 * Sort available class versions in descending order (i.e. newest first).
+		 */
+		protected static function sortVersions() {
+			foreach ( self::$classVersions as $class => $versions ) {
+				uksort($versions, array(__CLASS__, 'compareVersions'));
+				self::$classVersions[$class] = $versions;
+			}
+			self::$sorted = true;
+		}
+
+		protected static function compareVersions($a, $b) {
+			return -version_compare($a, $b);
+		}
+
+		/**
+		 * Register a version of a class.
+		 *
+		 * @access private This method is only for internal use by the library.
+		 *
+		 * @param string $generalClass Class name without version numbers, e.g. 'PluginUpdateChecker'.
+		 * @param string $versionedClass Actual class name, e.g. 'PluginUpdateChecker_1_2'.
+		 * @param string $version Version number, e.g. '1.2'.
+		 */
+		public static function addVersion($generalClass, $versionedClass, $version) {
+			if ( empty(self::$myMajorVersion) ) {
+				$className = (version_compare(PHP_VERSION, '5.3', '>=') && __NAMESPACE__)
+					? substr(__CLASS__, strlen(__NAMESPACE__) + 1)
+					: __CLASS__;
+
+				$nameParts = explode('_', $className, 3);
+				self::$myMajorVersion = substr(ltrim($nameParts[1], 'v'), 0, 1);
+			}
+
+			//Store the greatest version number that matches our major version.
+			$components = explode('.', $version);
+			if ( $components[0] === self::$myMajorVersion ) {
+
+				if (
+					empty(self::$latestCompatibleVersion)
+					|| version_compare($version, self::$latestCompatibleVersion, '>')
+				) {
+					self::$latestCompatibleVersion = $version;
+				}
+
+			}
+
+			if ( !isset(self::$classVersions[$generalClass]) ) {
+				self::$classVersions[$generalClass] = array();
+			}
+			self::$classVersions[$generalClass][$version] = $versionedClass;
+			self::$sorted = false;
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/InstalledPackage.php

@@ -0,0 +1,103 @@
+<?php
+if ( !class_exists('Puc_v4p13_InstalledPackage', false) ):
+
+	/**
+	 * This class represents a currently installed plugin or theme.
+	 *
+	 * Not to be confused with the "package" field in WP update API responses that contains
+	 * the download URL of a the new version.
+	 */
+	abstract class Puc_v4p13_InstalledPackage {
+		/**
+		 * @var Puc_v4p13_UpdateChecker
+		 */
+		protected $updateChecker;
+
+		public function __construct($updateChecker) {
+			$this->updateChecker = $updateChecker;
+		}
+
+		/**
+		 * Get the currently installed version of the plugin or theme.
+		 *
+		 * @return string|null Version number.
+		 */
+		abstract public function getInstalledVersion();
+
+		/**
+		 * Get the full path of the plugin or theme directory (without a trailing slash).
+		 *
+		 * @return string
+		 */
+		abstract public function getAbsoluteDirectoryPath();
+
+		/**
+		 * Check whether a regular file exists in the package's directory.
+		 *
+		 * @param string $relativeFileName File name relative to the package directory.
+		 * @return bool
+		 */
+		public function fileExists($relativeFileName) {
+			return is_file(
+				$this->getAbsoluteDirectoryPath()
+				. DIRECTORY_SEPARATOR
+				. ltrim($relativeFileName, '/\\')
+			);
+		}
+
+		/* -------------------------------------------------------------------
+		 * File header parsing
+		 * -------------------------------------------------------------------
+		 */
+
+		/**
+		 * Parse plugin or theme metadata from the header comment.
+		 *
+		 * This is basically a simplified version of the get_file_data() function from /wp-includes/functions.php.
+		 * It's intended as a utility for subclasses that detect updates by parsing files in a VCS.
+		 *
+		 * @param string|null $content File contents.
+		 * @return string[]
+		 */
+		public function getFileHeader($content) {
+			$content = (string)$content;
+
+			//WordPress only looks at the first 8 KiB of the file, so we do the same.
+			$content = substr($content, 0, 8192);
+			//Normalize line endings.
+			$content = str_replace("\r", "\n", $content);
+
+			$headers = $this->getHeaderNames();
+			$results = array();
+			foreach ($headers as $field => $name) {
+				$success = preg_match('/^[ \t\/*#@]*' . preg_quote($name, '/') . ':(.*)$/mi', $content, $matches);
+
+				if ( ($success === 1) && $matches[1] ) {
+					$value = $matches[1];
+					if ( function_exists('_cleanup_header_comment') ) {
+						$value = _cleanup_header_comment($value);
+					}
+					$results[$field] = $value;
+				} else {
+					$results[$field] = '';
+				}
+			}
+
+			return $results;
+		}
+
+		/**
+		 * @return array Format: ['HeaderKey' => 'Header Name']
+		 */
+		abstract protected function getHeaderNames();
+
+		/**
+		 * Get the value of a specific plugin or theme header.
+		 *
+		 * @param string $headerName
+		 * @return string Either the value of the header, or an empty string if the header doesn't exist.
+		 */
+		abstract public function getHeaderValue($headerName);
+
+	}
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/Metadata.php

@@ -0,0 +1,132 @@
+<?php
+if ( !class_exists('Puc_v4p13_Metadata', false) ):
+
+	/**
+	 * A base container for holding information about updates and plugin metadata.
+	 *
+	 * @author Janis Elsts
+	 * @copyright 2016
+	 * @access public
+	 */
+	abstract class Puc_v4p13_Metadata {
+
+		/**
+		 * Create an instance of this class from a JSON document.
+		 *
+		 * @abstract
+		 * @param string $json
+		 * @return self
+		 */
+		public static function fromJson(/** @noinspection PhpUnusedParameterInspection */ $json) {
+			throw new LogicException('The ' . __METHOD__ . ' method must be implemented by subclasses');
+		}
+
+		/**
+		 * @param string $json
+		 * @param self $target
+		 * @return bool
+		 */
+		protected static function createFromJson($json, $target) {
+			/** @var StdClass $apiResponse */
+			$apiResponse = json_decode($json);
+			if ( empty($apiResponse) || !is_object($apiResponse) ){
+				$errorMessage = "Failed to parse update metadata. Try validating your .json file with http://jsonlint.com/";
+				do_action('puc_api_error', new WP_Error('puc-invalid-json', $errorMessage));
+				trigger_error($errorMessage, E_USER_NOTICE);
+				return false;
+			}
+
+			$valid = $target->validateMetadata($apiResponse);
+			if ( is_wp_error($valid) ){
+				do_action('puc_api_error', $valid);
+				trigger_error($valid->get_error_message(), E_USER_NOTICE);
+				return false;
+			}
+
+			foreach(get_object_vars($apiResponse) as $key => $value){
+				$target->$key = $value;
+			}
+
+			return true;
+		}
+
+		/**
+		 * No validation by default! Subclasses should check that the required fields are present.
+		 *
+		 * @param StdClass $apiResponse
+		 * @return bool|WP_Error
+		 */
+		protected function validateMetadata(/** @noinspection PhpUnusedParameterInspection */ $apiResponse) {
+			return true;
+		}
+
+		/**
+		 * Create a new instance by copying the necessary fields from another object.
+		 *
+		 * @abstract
+		 * @param StdClass|self $object The source object.
+		 * @return self The new copy.
+		 */
+		public static function fromObject(/** @noinspection PhpUnusedParameterInspection */ $object) {
+			throw new LogicException('The ' . __METHOD__ . ' method must be implemented by subclasses');
+		}
+
+		/**
+		 * Create an instance of StdClass that can later be converted back to an
+		 * update or info container. Useful for serialization and caching, as it
+		 * avoids the "incomplete object" problem if the cached value is loaded
+		 * before this class.
+		 *
+		 * @return StdClass
+		 */
+		public function toStdClass() {
+			$object = new stdClass();
+			$this->copyFields($this, $object);
+			return $object;
+		}
+
+		/**
+		 * Transform the metadata into the format used by WordPress core.
+		 *
+		 * @return object
+		 */
+		abstract public function toWpFormat();
+
+		/**
+		 * Copy known fields from one object to another.
+		 *
+		 * @param StdClass|self $from
+		 * @param StdClass|self $to
+		 */
+		protected function copyFields($from, $to) {
+			$fields = $this->getFieldNames();
+
+			if ( property_exists($from, 'slug') && !empty($from->slug) ) {
+				//Let plugins add extra fields without having to create subclasses.
+				$fields = apply_filters($this->getPrefixedFilter('retain_fields') . '-' . $from->slug, $fields);
+			}
+
+			foreach ($fields as $field) {
+				if ( property_exists($from, $field) ) {
+					$to->$field = $from->$field;
+				}
+			}
+		}
+
+		/**
+		 * @return string[]
+		 */
+		protected function getFieldNames() {
+			return array();
+		}
+
+		/**
+		 * @param string $tag
+		 * @return string
+		 */
+		protected function getPrefixedFilter($tag) {
+			return 'puc_' . $tag;
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/OAuthSignature.php

@@ -0,0 +1,100 @@
+<?php
+
+if ( !class_exists('Puc_v4p13_OAuthSignature', false) ):
+
+	/**
+	 * A basic signature generator for zero-legged OAuth 1.0.
+	 */
+	class Puc_v4p13_OAuthSignature {
+		private $consumerKey = '';
+		private $consumerSecret = '';
+
+		public function __construct($consumerKey, $consumerSecret) {
+			$this->consumerKey = $consumerKey;
+			$this->consumerSecret = $consumerSecret;
+		}
+
+		/**
+		 * Sign a URL using OAuth 1.0.
+		 *
+		 * @param string $url The URL to be signed. It may contain query parameters.
+		 * @param string $method HTTP method such as "GET", "POST" and so on.
+		 * @return string The signed URL.
+		 */
+		public function sign($url, $method = 'GET') {
+			$parameters = array();
+
+			//Parse query parameters.
+			$query = parse_url($url, PHP_URL_QUERY);
+			if ( !empty($query) ) {
+				parse_str($query, $parsedParams);
+				if ( is_array($parameters) ) {
+					$parameters = $parsedParams;
+				}
+				//Remove the query string from the URL. We'll replace it later.
+				$url = substr($url, 0, strpos($url, '?'));
+			}
+
+			$parameters = array_merge(
+				$parameters,
+				array(
+					'oauth_consumer_key' => $this->consumerKey,
+					'oauth_nonce' => $this->nonce(),
+					'oauth_signature_method' => 'HMAC-SHA1',
+					'oauth_timestamp' => time(),
+					'oauth_version' => '1.0',
+				)
+			);
+			unset($parameters['oauth_signature']);
+
+			//Parameters must be sorted alphabetically before signing.
+			ksort($parameters);
+
+			//The most complicated part of the request - generating the signature.
+			//The string to sign contains the HTTP method, the URL path, and all of
+			//our query parameters. Everything is URL encoded. Then we concatenate
+			//them with ampersands into a single string to hash.
+			$encodedVerb = urlencode($method);
+			$encodedUrl = urlencode($url);
+			$encodedParams = urlencode(http_build_query($parameters, '', '&'));
+
+			$stringToSign = $encodedVerb . '&' . $encodedUrl . '&' . $encodedParams;
+
+			//Since we only have one OAuth token (the consumer secret) we only have
+			//to use it as our HMAC key. However, we still have to append an & to it
+			//as if we were using it with additional tokens.
+			$secret = urlencode($this->consumerSecret) . '&';
+
+			//The signature is a hash of the consumer key and the base string. Note
+			//that we have to get the raw output from hash_hmac and base64 encode
+			//the binary data result.
+			$parameters['oauth_signature'] = base64_encode(hash_hmac('sha1', $stringToSign, $secret, true));
+
+			return ($url . '?' . http_build_query($parameters));
+		}
+
+		/**
+		 * Generate a random nonce.
+		 *
+		 * @return string
+		 */
+		private function nonce() {
+			$mt = microtime();
+
+			$rand = null;
+			if ( is_callable('random_bytes') ) {
+				try {
+					$rand = random_bytes(16);
+				} catch (Exception $ex) {
+					//Fall back to mt_rand (below).
+				}
+			}
+			if ( $rand === null ) {
+				$rand = mt_rand();
+			}
+
+			return md5($mt . '_' . $rand);
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/Plugin/Info.php

@@ -0,0 +1,132 @@
+<?php
+if ( !class_exists('Puc_v4p13_Plugin_Info', false) ):
+
+	/**
+	 * A container class for holding and transforming various plugin metadata.
+	 *
+	 * @author Janis Elsts
+	 * @copyright 2016
+	 * @access public
+	 */
+	class Puc_v4p13_Plugin_Info extends Puc_v4p13_Metadata {
+		//Most fields map directly to the contents of the plugin's info.json file.
+		//See the relevant docs for a description of their meaning.
+		public $name;
+		public $slug;
+		public $version;
+		public $homepage;
+		public $sections = array();
+		public $download_url;
+
+		public $banners;
+		public $icons = array();
+		public $translations = array();
+
+		public $author;
+		public $author_homepage;
+
+		public $requires;
+		public $tested;
+		public $requires_php;
+		public $upgrade_notice;
+
+		public $rating;
+		public $num_ratings;
+		public $downloaded;
+		public $active_installs;
+		public $last_updated;
+
+		public $id = 0; //The native WP.org API returns numeric plugin IDs, but they're not used for anything.
+
+		public $filename; //Plugin filename relative to the plugins directory.
+
+		/**
+		 * Create a new instance of Plugin Info from JSON-encoded plugin info
+		 * returned by an external update API.
+		 *
+		 * @param string $json Valid JSON string representing plugin info.
+		 * @return self|null New instance of Plugin Info, or NULL on error.
+		 */
+		public static function fromJson($json){
+			$instance = new self();
+
+			if ( !parent::createFromJson($json, $instance) ) {
+				return null;
+			}
+
+			//json_decode decodes assoc. arrays as objects. We want them as arrays.
+			$instance->sections = (array)$instance->sections;
+			$instance->icons = (array)$instance->icons;
+
+			return $instance;
+		}
+
+		/**
+		 * Very, very basic validation.
+		 *
+		 * @param StdClass $apiResponse
+		 * @return bool|WP_Error
+		 */
+		protected function validateMetadata($apiResponse) {
+			if (
+				!isset($apiResponse->name, $apiResponse->version)
+				|| empty($apiResponse->name)
+				|| empty($apiResponse->version)
+			) {
+				return new WP_Error(
+					'puc-invalid-metadata',
+					"The plugin metadata file does not contain the required 'name' and/or 'version' keys."
+				);
+			}
+			return true;
+		}
+
+
+		/**
+		 * Transform plugin info into the format used by the native WordPress.org API
+		 *
+		 * @return object
+		 */
+		public function toWpFormat(){
+			$info = new stdClass;
+
+			//The custom update API is built so that many fields have the same name and format
+			//as those returned by the native WordPress.org API. These can be assigned directly.
+			$sameFormat = array(
+				'name', 'slug', 'version', 'requires', 'tested', 'rating', 'upgrade_notice',
+				'num_ratings', 'downloaded', 'active_installs', 'homepage', 'last_updated',
+				'requires_php',
+			);
+			foreach($sameFormat as $field){
+				if ( isset($this->$field) ) {
+					$info->$field = $this->$field;
+				} else {
+					$info->$field = null;
+				}
+			}
+
+			//Other fields need to be renamed and/or transformed.
+			$info->download_link = $this->download_url;
+			$info->author = $this->getFormattedAuthor();
+			$info->sections = array_merge(array('description' => ''), $this->sections);
+
+			if ( !empty($this->banners) ) {
+				//WP expects an array with two keys: "high" and "low". Both are optional.
+				//Docs: https://wordpress.org/plugins/about/faq/#banners
+				$info->banners = is_object($this->banners) ? get_object_vars($this->banners) : $this->banners;
+				$info->banners = array_intersect_key($info->banners, array('high' => true, 'low' => true));
+			}
+
+			return $info;
+		}
+
+		protected function getFormattedAuthor() {
+			if ( !empty($this->author_homepage) ){
+				/** @noinspection HtmlUnknownTarget */
+				return sprintf('<a href="%s">%s</a>', $this->author_homepage, $this->author);
+			}
+			return $this->author;
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/Plugin/Package.php

@@ -0,0 +1,184 @@
+<?php
+if ( !class_exists('Puc_v4p13_Plugin_Package', false) ):
+
+	class Puc_v4p13_Plugin_Package extends Puc_v4p13_InstalledPackage {
+		/**
+		 * @var Puc_v4p13_Plugin_UpdateChecker
+		 */
+		protected $updateChecker;
+
+		/**
+		 * @var string Full path of the main plugin file.
+		 */
+		protected $pluginAbsolutePath = '';
+
+		/**
+		 * @var string Plugin basename.
+		 */
+		private $pluginFile;
+
+		/**
+		 * @var string|null
+		 */
+		private $cachedInstalledVersion = null;
+
+		public function __construct($pluginAbsolutePath, $updateChecker) {
+			$this->pluginAbsolutePath = $pluginAbsolutePath;
+			$this->pluginFile = plugin_basename($this->pluginAbsolutePath);
+
+			parent::__construct($updateChecker);
+
+			//Clear the version number cache when something - anything - is upgraded or WP clears the update cache.
+			add_filter('upgrader_post_install', array($this, 'clearCachedVersion'));
+			add_action('delete_site_transient_update_plugins', array($this, 'clearCachedVersion'));
+		}
+
+		public function getInstalledVersion() {
+			if ( isset($this->cachedInstalledVersion) ) {
+				return $this->cachedInstalledVersion;
+			}
+
+			$pluginHeader = $this->getPluginHeader();
+			if ( isset($pluginHeader['Version']) ) {
+				$this->cachedInstalledVersion = $pluginHeader['Version'];
+				return $pluginHeader['Version'];
+			} else {
+				//This can happen if the filename points to something that is not a plugin.
+				$this->updateChecker->triggerError(
+					sprintf(
+						"Can't to read the Version header for '%s'. The filename is incorrect or is not a plugin.",
+						$this->updateChecker->pluginFile
+					),
+					E_USER_WARNING
+				);
+				return null;
+			}
+		}
+
+		/**
+		 * Clear the cached plugin version. This method can be set up as a filter (hook) and will
+		 * return the filter argument unmodified.
+		 *
+		 * @param mixed $filterArgument
+		 * @return mixed
+		 */
+		public function clearCachedVersion($filterArgument = null) {
+			$this->cachedInstalledVersion = null;
+			return $filterArgument;
+		}
+
+		public function getAbsoluteDirectoryPath() {
+			return dirname($this->pluginAbsolutePath);
+		}
+
+		/**
+		 * Get the value of a specific plugin or theme header.
+		 *
+		 * @param string $headerName
+		 * @param string $defaultValue
+		 * @return string Either the value of the header, or $defaultValue if the header doesn't exist or is empty.
+		 */
+		public function getHeaderValue($headerName, $defaultValue = '') {
+			$headers = $this->getPluginHeader();
+			if ( isset($headers[$headerName]) && ($headers[$headerName] !== '') ) {
+				return $headers[$headerName];
+			}
+			return $defaultValue;
+		}
+
+		protected function getHeaderNames() {
+			return array(
+				'Name'              => 'Plugin Name',
+				'PluginURI'         => 'Plugin URI',
+				'Version'           => 'Version',
+				'Description'       => 'Description',
+				'Author'            => 'Author',
+				'AuthorURI'         => 'Author URI',
+				'TextDomain'        => 'Text Domain',
+				'DomainPath'        => 'Domain Path',
+				'Network'           => 'Network',
+
+				//The newest WordPress version that this plugin requires or has been tested with.
+				//We support several different formats for compatibility with other libraries.
+				'Tested WP'         => 'Tested WP',
+				'Requires WP'       => 'Requires WP',
+				'Tested up to'      => 'Tested up to',
+				'Requires at least' => 'Requires at least',
+			);
+		}
+
+		/**
+		 * Get the translated plugin title.
+		 *
+		 * @return string
+		 */
+		public function getPluginTitle() {
+			$title = '';
+			$header = $this->getPluginHeader();
+			if ( $header && !empty($header['Name']) && isset($header['TextDomain']) ) {
+				$title = translate($header['Name'], $header['TextDomain']);
+			}
+			return $title;
+		}
+
+		/**
+		 * Get plugin's metadata from its file header.
+		 *
+		 * @return array
+		 */
+		public function getPluginHeader() {
+			if ( !is_file($this->pluginAbsolutePath) ) {
+				//This can happen if the plugin filename is wrong.
+				$this->updateChecker->triggerError(
+					sprintf(
+						"Can't to read the plugin header for '%s'. The file does not exist.",
+						$this->updateChecker->pluginFile
+					),
+					E_USER_WARNING
+				);
+				return array();
+			}
+
+			if ( !function_exists('get_plugin_data') ) {
+				/** @noinspection PhpIncludeInspection */
+				require_once(ABSPATH . '/wp-admin/includes/plugin.php');
+			}
+			return get_plugin_data($this->pluginAbsolutePath, false, false);
+		}
+
+		public function removeHooks() {
+			remove_filter('upgrader_post_install', array($this, 'clearCachedVersion'));
+			remove_action('delete_site_transient_update_plugins', array($this, 'clearCachedVersion'));
+		}
+
+		/**
+		 * Check if the plugin file is inside the mu-plugins directory.
+		 *
+		 * @return bool
+		 */
+		public function isMuPlugin() {
+			static $cachedResult = null;
+
+			if ( $cachedResult === null ) {
+				if ( !defined('WPMU_PLUGIN_DIR') || !is_string(WPMU_PLUGIN_DIR) ) {
+					$cachedResult = false;
+					return $cachedResult;
+				}
+
+				//Convert both paths to the canonical form before comparison.
+				$muPluginDir = realpath(WPMU_PLUGIN_DIR);
+				$pluginPath  = realpath($this->pluginAbsolutePath);
+				//If realpath() fails, just normalize the syntax instead.
+				if (($muPluginDir === false) || ($pluginPath === false)) {
+					$muPluginDir = Puc_v4p13_Factory::normalizePath(WPMU_PLUGIN_DIR);
+					$pluginPath  = Puc_v4p13_Factory::normalizePath($this->pluginAbsolutePath);
+				}
+
+				$cachedResult = (strpos($pluginPath, $muPluginDir) === 0);
+			}
+
+			return $cachedResult;
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/Plugin/Ui.php

@@ -0,0 +1,278 @@
+<?php
+if ( !class_exists('Puc_v4p13_Plugin_Ui', false) ):
+	/**
+	 * Additional UI elements for plugins.
+	 */
+	class Puc_v4p13_Plugin_Ui {
+		private $updateChecker;
+		private $manualCheckErrorTransient = '';
+
+		/**
+		 * @param Puc_v4p13_Plugin_UpdateChecker $updateChecker
+		 */
+		public function __construct($updateChecker) {
+			$this->updateChecker = $updateChecker;
+			$this->manualCheckErrorTransient = $this->updateChecker->getUniqueName('manual_check_errors');
+
+			add_action('admin_init', array($this, 'onAdminInit'));
+		}
+
+		public function onAdminInit() {
+			if ( $this->updateChecker->userCanInstallUpdates() ) {
+				$this->handleManualCheck();
+
+				add_filter('plugin_row_meta', array($this, 'addViewDetailsLink'), 10, 3);
+				add_filter('plugin_row_meta', array($this, 'addCheckForUpdatesLink'), 10, 2);
+				add_action('all_admin_notices', array($this, 'displayManualCheckResult'));
+			}
+		}
+
+		/**
+		 * Add a "View Details" link to the plugin row in the "Plugins" page. By default,
+		 * the new link will appear before the "Visit plugin site" link (if present).
+		 *
+		 * You can change the link text by using the "puc_view_details_link-$slug" filter.
+		 * Returning an empty string from the filter will disable the link.
+		 *
+		 * You can change the position of the link using the
+		 * "puc_view_details_link_position-$slug" filter.
+		 * Returning 'before' or 'after' will place the link immediately before/after
+		 * the "Visit plugin site" link.
+		 * Returning 'append' places the link after any existing links at the time of the hook.
+		 * Returning 'replace' replaces the "Visit plugin site" link.
+		 * Returning anything else disables the link when there is a "Visit plugin site" link.
+		 *
+		 * If there is no "Visit plugin site" link 'append' is always used!
+		 *
+		 * @param array $pluginMeta Array of meta links.
+		 * @param string $pluginFile
+		 * @param array $pluginData Array of plugin header data.
+		 * @return array
+		 */
+		public function addViewDetailsLink($pluginMeta, $pluginFile, $pluginData = array()) {
+			if ( $this->isMyPluginFile($pluginFile) && !isset($pluginData['slug']) ) {
+				$linkText = apply_filters($this->updateChecker->getUniqueName('view_details_link'), __('View details'));
+				if ( !empty($linkText) ) {
+					$viewDetailsLinkPosition = 'append';
+
+					//Find the "Visit plugin site" link (if present).
+					$visitPluginSiteLinkIndex = count($pluginMeta) - 1;
+					if ( $pluginData['PluginURI'] ) {
+						$escapedPluginUri = esc_url($pluginData['PluginURI']);
+						foreach ($pluginMeta as $linkIndex => $existingLink) {
+							if ( strpos($existingLink, $escapedPluginUri) !== false ) {
+								$visitPluginSiteLinkIndex = $linkIndex;
+								$viewDetailsLinkPosition = apply_filters(
+									$this->updateChecker->getUniqueName('view_details_link_position'),
+									'before'
+								);
+								break;
+							}
+						}
+					}
+
+					$viewDetailsLink = sprintf('<a href="%s" class="thickbox open-plugin-details-modal" aria-label="%s" data-title="%s">%s</a>',
+						esc_url(network_admin_url('plugin-install.php?tab=plugin-information&plugin=' . urlencode($this->updateChecker->slug) .
+							'&TB_iframe=true&width=600&height=550')),
+						esc_attr(sprintf(__('More information about %s'), $pluginData['Name'])),
+						esc_attr($pluginData['Name']),
+						$linkText
+					);
+					switch ($viewDetailsLinkPosition) {
+						case 'before':
+							array_splice($pluginMeta, $visitPluginSiteLinkIndex, 0, $viewDetailsLink);
+							break;
+						case 'after':
+							array_splice($pluginMeta, $visitPluginSiteLinkIndex + 1, 0, $viewDetailsLink);
+							break;
+						case 'replace':
+							$pluginMeta[$visitPluginSiteLinkIndex] = $viewDetailsLink;
+							break;
+						case 'append':
+						default:
+							$pluginMeta[] = $viewDetailsLink;
+							break;
+					}
+				}
+			}
+			return $pluginMeta;
+		}
+
+		/**
+		 * Add a "Check for updates" link to the plugin row in the "Plugins" page. By default,
+		 * the new link will appear after the "Visit plugin site" link if present, otherwise
+		 * after the "View plugin details" link.
+		 *
+		 * You can change the link text by using the "puc_manual_check_link-$slug" filter.
+		 * Returning an empty string from the filter will disable the link.
+		 *
+		 * @param array $pluginMeta Array of meta links.
+		 * @param string $pluginFile
+		 * @return array
+		 */
+		public function addCheckForUpdatesLink($pluginMeta, $pluginFile) {
+			if ( $this->isMyPluginFile($pluginFile) ) {
+				$linkUrl = wp_nonce_url(
+					add_query_arg(
+						array(
+							'puc_check_for_updates' => 1,
+							'puc_slug'              => $this->updateChecker->slug,
+						),
+						self_admin_url('plugins.php')
+					),
+					'puc_check_for_updates'
+				);
+
+				$linkText = apply_filters(
+					$this->updateChecker->getUniqueName('manual_check_link'),
+					__('Check for updates', 'plugin-update-checker')
+				);
+				if ( !empty($linkText) ) {
+					/** @noinspection HtmlUnknownTarget */
+					$pluginMeta[] = sprintf('<a href="%s">%s</a>', esc_attr($linkUrl), $linkText);
+				}
+			}
+			return $pluginMeta;
+		}
+
+		protected function isMyPluginFile($pluginFile) {
+			return ($pluginFile == $this->updateChecker->pluginFile)
+				|| (!empty($this->updateChecker->muPluginFile) && ($pluginFile == $this->updateChecker->muPluginFile));
+		}
+
+		/**
+		 * Check for updates when the user clicks the "Check for updates" link.
+		 *
+		 * @see self::addCheckForUpdatesLink()
+		 *
+		 * @return void
+		 */
+		public function handleManualCheck() {
+			$shouldCheck =
+				isset($_GET['puc_check_for_updates'], $_GET['puc_slug'])
+				&& $_GET['puc_slug'] == $this->updateChecker->slug
+				&& check_admin_referer('puc_check_for_updates');
+
+			if ( $shouldCheck ) {
+				$update = $this->updateChecker->checkForUpdates();
+				$status = ($update === null) ? 'no_update' : 'update_available';
+				$lastRequestApiErrors = $this->updateChecker->getLastRequestApiErrors();
+
+				if ( ($update === null) && !empty($lastRequestApiErrors) ) {
+					//Some errors are not critical. For example, if PUC tries to retrieve the readme.txt
+					//file from GitHub and gets a 404, that's an API error, but it doesn't prevent updates
+					//from working. Maybe the plugin simply doesn't have a readme.
+					//Let's only show important errors.
+					$foundCriticalErrors = false;
+					$questionableErrorCodes = array(
+						'puc-github-http-error',
+						'puc-gitlab-http-error',
+						'puc-bitbucket-http-error',
+					);
+
+					foreach ($lastRequestApiErrors as $item) {
+						$wpError = $item['error'];
+						/** @var WP_Error $wpError */
+						if ( !in_array($wpError->get_error_code(), $questionableErrorCodes) ) {
+							$foundCriticalErrors = true;
+							break;
+						}
+					}
+
+					if ( $foundCriticalErrors ) {
+						$status = 'error';
+						set_site_transient($this->manualCheckErrorTransient, $lastRequestApiErrors, 60);
+					}
+				}
+
+				wp_redirect(add_query_arg(
+					array(
+						'puc_update_check_result' => $status,
+						'puc_slug'                => $this->updateChecker->slug,
+					),
+					self_admin_url('plugins.php')
+				));
+				exit;
+			}
+		}
+
+		/**
+		 * Display the results of a manual update check.
+		 *
+		 * @see self::handleManualCheck()
+		 *
+		 * You can change the result message by using the "puc_manual_check_message-$slug" filter.
+		 */
+		public function displayManualCheckResult() {
+			if ( isset($_GET['puc_update_check_result'], $_GET['puc_slug']) && ($_GET['puc_slug'] == $this->updateChecker->slug) ) {
+				$status = strval($_GET['puc_update_check_result']);
+				$title = $this->updateChecker->getInstalledPackage()->getPluginTitle();
+				$noticeClass = 'updated notice-success';
+				$details = '';
+
+				if ( $status == 'no_update' ) {
+					$message = sprintf(_x('The %s plugin is up to date.', 'the plugin title', 'plugin-update-checker'), $title);
+				} else if ( $status == 'update_available' ) {
+					$message = sprintf(_x('A new version of the %s plugin is available.', 'the plugin title', 'plugin-update-checker'), $title);
+				} else if ( $status === 'error' ) {
+					$message = sprintf(_x('Could not determine if updates are available for %s.', 'the plugin title', 'plugin-update-checker'), $title);
+					$noticeClass = 'error notice-error';
+
+					$details = $this->formatManualCheckErrors(get_site_transient($this->manualCheckErrorTransient));
+					delete_site_transient($this->manualCheckErrorTransient);
+				} else {
+					$message = sprintf(__('Unknown update checker status "%s"', 'plugin-update-checker'), htmlentities($status));
+					$noticeClass = 'error notice-error';
+				}
+				printf(
+					'<div class="notice %s is-dismissible"><p>%s</p>%s</div>',
+					$noticeClass,
+					apply_filters($this->updateChecker->getUniqueName('manual_check_message'), $message, $status),
+					$details
+				);
+			}
+		}
+
+		/**
+		 * Format the list of errors that were thrown during an update check.
+		 *
+		 * @param array $errors
+		 * @return string
+		 */
+		protected function formatManualCheckErrors($errors) {
+			if ( empty($errors) ) {
+				return '';
+			}
+			$output = '';
+
+			$showAsList = count($errors) > 1;
+			if ( $showAsList ) {
+				$output .= '<ol>';
+				$formatString = '<li>%1$s <code>%2$s</code></li>';
+			} else {
+				$formatString = '<p>%1$s <code>%2$s</code></p>';
+			}
+			foreach ($errors as $item) {
+				$wpError = $item['error'];
+				/** @var WP_Error $wpError */
+				$output .= sprintf(
+					$formatString,
+					$wpError->get_error_message(),
+					$wpError->get_error_code()
+				);
+			}
+			if ( $showAsList ) {
+				$output .= '</ol>';
+			}
+
+			return $output;
+		}
+
+		public function removeHooks() {
+			remove_action('admin_init', array($this, 'onAdminInit'));
+			remove_filter('plugin_row_meta', array($this, 'addViewDetailsLink'), 10);
+			remove_filter('plugin_row_meta', array($this, 'addCheckForUpdatesLink'), 10);
+			remove_action('all_admin_notices', array($this, 'displayManualCheckResult'));
+		}
+	}
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/Plugin/Update.php

@@ -0,0 +1,112 @@
+<?php
+if ( !class_exists('Puc_v4p13_Plugin_Update', false) ):
+
+	/**
+	 * A simple container class for holding information about an available update.
+	 *
+	 * @author Janis Elsts
+	 * @copyright 2016
+	 * @access public
+	 */
+	class Puc_v4p13_Plugin_Update extends Puc_v4p13_Update {
+		public $id = 0;
+		public $homepage;
+		public $upgrade_notice;
+		public $tested;
+		public $requires_php = false;
+		public $icons = array();
+		public $filename; //Plugin filename relative to the plugins directory.
+
+		protected static $extraFields = array(
+			'id', 'homepage', 'tested', 'requires_php', 'upgrade_notice', 'icons', 'filename',
+		);
+
+		/**
+		 * Create a new instance of PluginUpdate from its JSON-encoded representation.
+		 *
+		 * @param string $json
+		 * @return Puc_v4p13_Plugin_Update|null
+		 */
+		public static function fromJson($json){
+			//Since update-related information is simply a subset of the full plugin info,
+			//we can parse the update JSON as if it was a plugin info string, then copy over
+			//the parts that we care about.
+			$pluginInfo = Puc_v4p13_Plugin_Info::fromJson($json);
+			if ( $pluginInfo !== null ) {
+				return self::fromPluginInfo($pluginInfo);
+			} else {
+				return null;
+			}
+		}
+
+		/**
+		 * Create a new instance of PluginUpdate based on an instance of PluginInfo.
+		 * Basically, this just copies a subset of fields from one object to another.
+		 *
+		 * @param Puc_v4p13_Plugin_Info $info
+		 * @return Puc_v4p13_Plugin_Update
+		 */
+		public static function fromPluginInfo($info){
+			return self::fromObject($info);
+		}
+
+		/**
+		 * Create a new instance by copying the necessary fields from another object.
+		 *
+		 * @param StdClass|Puc_v4p13_Plugin_Info|Puc_v4p13_Plugin_Update $object The source object.
+		 * @return Puc_v4p13_Plugin_Update The new copy.
+		 */
+		public static function fromObject($object) {
+			$update = new self();
+			$update->copyFields($object, $update);
+			return $update;
+		}
+
+		/**
+		 * @return string[]
+		 */
+		protected function getFieldNames() {
+			return array_merge(parent::getFieldNames(), self::$extraFields);
+		}
+
+		/**
+		 * Transform the update into the format used by WordPress native plugin API.
+		 *
+		 * @return object
+		 */
+		public function toWpFormat() {
+			$update = parent::toWpFormat();
+
+			$update->id = $this->id;
+			$update->url = $this->homepage;
+			$update->tested = $this->tested;
+			$update->requires_php = $this->requires_php;
+			$update->plugin = $this->filename;
+
+			if ( !empty($this->upgrade_notice) ) {
+				$update->upgrade_notice = $this->upgrade_notice;
+			}
+
+			if ( !empty($this->icons) && is_array($this->icons) ) {
+				//This should be an array with up to 4 keys: 'svg', '1x', '2x' and 'default'.
+				//Docs: https://developer.wordpress.org/plugins/wordpress-org/plugin-assets/#plugin-icons
+				$icons = array_intersect_key(
+					$this->icons,
+					array('svg' => true, '1x' => true, '2x' => true, 'default' => true)
+				);
+				if ( !empty($icons) ) {
+					$update->icons = $icons;
+
+					//It appears that the 'default' icon isn't used anywhere in WordPress 4.9,
+					//but lets set it just in case a future release needs it.
+					if ( !isset($update->icons['default']) ) {
+						$update->icons['default'] = current($update->icons);
+					}
+				}
+			}
+
+			return $update;
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/Plugin/UpdateChecker.php

@@ -0,0 +1,414 @@
+<?php
+if ( !class_exists('Puc_v4p13_Plugin_UpdateChecker', false) ):
+
+	/**
+	 * A custom plugin update checker.
+	 *
+	 * @author Janis Elsts
+	 * @copyright 2018
+	 * @access public
+	 */
+	class Puc_v4p13_Plugin_UpdateChecker extends Puc_v4p13_UpdateChecker {
+		protected $updateTransient = 'update_plugins';
+		protected $translationType = 'plugin';
+
+		public $pluginAbsolutePath = ''; //Full path of the main plugin file.
+		public $pluginFile = '';  //Plugin filename relative to the plugins directory. Many WP APIs use this to identify plugins.
+		public $muPluginFile = ''; //For MU plugins, the plugin filename relative to the mu-plugins directory.
+
+		/**
+		 * @var Puc_v4p13_Plugin_Package
+		 */
+		protected $package;
+
+		private $extraUi = null;
+
+		/**
+		 * Class constructor.
+		 *
+		 * @param string $metadataUrl The URL of the plugin's metadata file.
+		 * @param string $pluginFile Fully qualified path to the main plugin file.
+		 * @param string $slug The plugin's 'slug'. If not specified, the filename part of $pluginFile sans '.php' will be used as the slug.
+		 * @param integer $checkPeriod How often to check for updates (in hours). Defaults to checking every 12 hours. Set to 0 to disable automatic update checks.
+		 * @param string $optionName Where to store book-keeping info about update checks. Defaults to 'external_updates-$slug'.
+		 * @param string $muPluginFile Optional. The plugin filename relative to the mu-plugins directory.
+		 */
+		public function __construct($metadataUrl, $pluginFile, $slug = '', $checkPeriod = 12, $optionName = '', $muPluginFile = ''){
+			$this->pluginAbsolutePath = $pluginFile;
+			$this->pluginFile = plugin_basename($this->pluginAbsolutePath);
+			$this->muPluginFile = $muPluginFile;
+
+			//If no slug is specified, use the name of the main plugin file as the slug.
+			//For example, 'my-cool-plugin/cool-plugin.php' becomes 'cool-plugin'.
+			if ( empty($slug) ){
+				$slug = basename($this->pluginFile, '.php');
+			}
+
+			//Plugin slugs must be unique.
+			$slugCheckFilter = 'puc_is_slug_in_use-' . $slug;
+			$slugUsedBy = apply_filters($slugCheckFilter, false);
+			if ( $slugUsedBy ) {
+				$this->triggerError(sprintf(
+					'Plugin slug "%s" is already in use by %s. Slugs must be unique.',
+					htmlentities($slug),
+					htmlentities($slugUsedBy)
+				), E_USER_ERROR);
+			}
+			add_filter($slugCheckFilter, array($this, 'getAbsolutePath'));
+
+			parent::__construct($metadataUrl, dirname($this->pluginFile), $slug, $checkPeriod, $optionName);
+
+			//Backwards compatibility: If the plugin is a mu-plugin but no $muPluginFile is specified, assume
+			//it's the same as $pluginFile given that it's not in a subdirectory (WP only looks in the base dir).
+			if ( (strpbrk($this->pluginFile, '/\\') === false) && $this->isUnknownMuPlugin() ) {
+				$this->muPluginFile = $this->pluginFile;
+			}
+
+			//To prevent a crash during plugin uninstallation, remove updater hooks when the user removes the plugin.
+			//Details: https://github.com/YahnisElsts/plugin-update-checker/issues/138#issuecomment-335590964
+			add_action('uninstall_' . $this->pluginFile, array($this, 'removeHooks'));
+
+			$this->extraUi = new Puc_v4p13_Plugin_Ui($this);
+		}
+
+		/**
+		 * Create an instance of the scheduler.
+		 *
+		 * @param int $checkPeriod
+		 * @return Puc_v4p13_Scheduler
+		 */
+		protected function createScheduler($checkPeriod) {
+			$scheduler = new Puc_v4p13_Scheduler($this, $checkPeriod, array('load-plugins.php'));
+			register_deactivation_hook($this->pluginFile, array($scheduler, 'removeUpdaterCron'));
+			return $scheduler;
+		}
+
+		/**
+		 * Install the hooks required to run periodic update checks and inject update info
+		 * into WP data structures.
+		 *
+		 * @return void
+		 */
+		protected function installHooks(){
+			//Override requests for plugin information
+			add_filter('plugins_api', array($this, 'injectInfo'), 20, 3);
+
+			parent::installHooks();
+		}
+
+		/**
+		 * Remove update checker hooks.
+		 *
+		 * The intent is to prevent a fatal error that can happen if the plugin has an uninstall
+		 * hook. During uninstallation, WP includes the main plugin file (which creates a PUC instance),
+		 * the uninstall hook runs, WP deletes the plugin files and then updates some transients.
+		 * If PUC hooks are still around at this time, they could throw an error while trying to
+		 * autoload classes from files that no longer exist.
+		 *
+		 * The "site_transient_{$transient}" filter is the main problem here, but let's also remove
+		 * most other PUC hooks to be safe.
+		 *
+		 * @internal
+		 */
+		public function removeHooks() {
+			parent::removeHooks();
+			$this->extraUi->removeHooks();
+			$this->package->removeHooks();
+
+			remove_filter('plugins_api', array($this, 'injectInfo'), 20);
+		}
+
+		/**
+		 * Retrieve plugin info from the configured API endpoint.
+		 *
+		 * @uses wp_remote_get()
+		 *
+		 * @param array $queryArgs Additional query arguments to append to the request. Optional.
+		 * @return Puc_v4p13_Plugin_Info
+		 */
+		public function requestInfo($queryArgs = array()) {
+			list($pluginInfo, $result) = $this->requestMetadata('Puc_v4p13_Plugin_Info', 'request_info', $queryArgs);
+
+			if ( $pluginInfo !== null ) {
+				/** @var Puc_v4p13_Plugin_Info $pluginInfo */
+				$pluginInfo->filename = $this->pluginFile;
+				$pluginInfo->slug = $this->slug;
+			}
+
+			$pluginInfo = apply_filters($this->getUniqueName('request_info_result'), $pluginInfo, $result);
+			return $pluginInfo;
+		}
+
+		/**
+		 * Retrieve the latest update (if any) from the configured API endpoint.
+		 *
+		 * @uses PluginUpdateChecker::requestInfo()
+		 *
+		 * @return Puc_v4p13_Update|null An instance of Plugin_Update, or NULL when no updates are available.
+		 */
+		public function requestUpdate() {
+			//For the sake of simplicity, this function just calls requestInfo()
+			//and transforms the result accordingly.
+			$pluginInfo = $this->requestInfo(array('checking_for_updates' => '1'));
+			if ( $pluginInfo === null ){
+				return null;
+			}
+			$update = Puc_v4p13_Plugin_Update::fromPluginInfo($pluginInfo);
+
+			$update = $this->filterUpdateResult($update);
+
+			return $update;
+		}
+
+		/**
+		 * Intercept plugins_api() calls that request information about our plugin and
+		 * use the configured API endpoint to satisfy them.
+		 *
+		 * @see plugins_api()
+		 *
+		 * @param mixed $result
+		 * @param string $action
+		 * @param array|object $args
+		 * @return mixed
+		 */
+		public function injectInfo($result, $action = null, $args = null){
+			$relevant = ($action == 'plugin_information') && isset($args->slug) && (
+					($args->slug == $this->slug) || ($args->slug == dirname($this->pluginFile))
+				);
+			if ( !$relevant ) {
+				return $result;
+			}
+
+			$pluginInfo = $this->requestInfo();
+			$this->fixSupportedWordpressVersion($pluginInfo);
+
+			$pluginInfo = apply_filters($this->getUniqueName('pre_inject_info'), $pluginInfo);
+			if ( $pluginInfo ) {
+				return $pluginInfo->toWpFormat();
+			}
+
+			return $result;
+		}
+
+		protected function shouldShowUpdates() {
+			//No update notifications for mu-plugins unless explicitly enabled. The MU plugin file
+			//is usually different from the main plugin file so the update wouldn't show up properly anyway.
+			return !$this->isUnknownMuPlugin();
+		}
+
+		/**
+		 * @param stdClass|null $updates
+		 * @param stdClass $updateToAdd
+		 * @return stdClass
+		 */
+		protected function addUpdateToList($updates, $updateToAdd) {
+			if ( $this->package->isMuPlugin() ) {
+				//WP does not support automatic update installation for mu-plugins, but we can
+				//still display a notice.
+				$updateToAdd->package = null;
+			}
+			return parent::addUpdateToList($updates, $updateToAdd);
+		}
+
+		/**
+		 * @param stdClass|null $updates
+		 * @return stdClass|null
+		 */
+		protected function removeUpdateFromList($updates) {
+			$updates = parent::removeUpdateFromList($updates);
+			if ( !empty($this->muPluginFile) && isset($updates, $updates->response) ) {
+				unset($updates->response[$this->muPluginFile]);
+			}
+			return $updates;
+		}
+
+		/**
+		 * For plugins, the update array is indexed by the plugin filename relative to the "plugins"
+		 * directory. Example: "plugin-name/plugin.php".
+		 *
+		 * @return string
+		 */
+		protected function getUpdateListKey() {
+			if ( $this->package->isMuPlugin() ) {
+				return $this->muPluginFile;
+			}
+			return $this->pluginFile;
+		}
+
+		protected function getNoUpdateItemFields() {
+			return array_merge(
+				parent::getNoUpdateItemFields(),
+				array(
+					'id'            => $this->pluginFile,
+					'slug'          => $this->slug,
+					'plugin'        => $this->pluginFile,
+					'icons'         => array(),
+					'banners'       => array(),
+					'banners_rtl'   => array(),
+					'tested'        => '',
+					'compatibility' => new stdClass(),
+				)
+			);
+		}
+
+		/**
+		 * Alias for isBeingUpgraded().
+		 *
+		 * @deprecated
+		 * @param WP_Upgrader|null $upgrader The upgrader that's performing the current update.
+		 * @return bool
+		 */
+		public function isPluginBeingUpgraded($upgrader = null) {
+			return $this->isBeingUpgraded($upgrader);
+		}
+
+		/**
+		 * Is there an update being installed for this plugin, right now?
+		 *
+		 * @param WP_Upgrader|null $upgrader
+		 * @return bool
+		 */
+		public function isBeingUpgraded($upgrader = null) {
+			return $this->upgraderStatus->isPluginBeingUpgraded($this->pluginFile, $upgrader);
+		}
+
+		/**
+		 * Get the details of the currently available update, if any.
+		 *
+		 * If no updates are available, or if the last known update version is below or equal
+		 * to the currently installed version, this method will return NULL.
+		 *
+		 * Uses cached update data. To retrieve update information straight from
+		 * the metadata URL, call requestUpdate() instead.
+		 *
+		 * @return Puc_v4p13_Plugin_Update|null
+		 */
+		public function getUpdate() {
+			$update = parent::getUpdate();
+			if ( isset($update) ) {
+				/** @var Puc_v4p13_Plugin_Update $update */
+				$update->filename = $this->pluginFile;
+			}
+			return $update;
+		}
+
+		/**
+		 * Get the translated plugin title.
+		 *
+		 * @deprecated
+		 * @return string
+		 */
+		public function getPluginTitle() {
+			return $this->package->getPluginTitle();
+		}
+
+		/**
+		 * Check if the current user has the required permissions to install updates.
+		 *
+		 * @return bool
+		 */
+		public function userCanInstallUpdates() {
+			return current_user_can('update_plugins');
+		}
+
+		/**
+		 * Check if the plugin file is inside the mu-plugins directory.
+		 *
+		 * @deprecated
+		 * @return bool
+		 */
+		protected function isMuPlugin() {
+			return $this->package->isMuPlugin();
+		}
+
+		/**
+		 * MU plugins are partially supported, but only when we know which file in mu-plugins
+		 * corresponds to this plugin.
+		 *
+		 * @return bool
+		 */
+		protected function isUnknownMuPlugin() {
+			return empty($this->muPluginFile) && $this->package->isMuPlugin();
+		}
+
+		/**
+		 * Get absolute path to the main plugin file.
+		 *
+		 * @return string
+		 */
+		public function getAbsolutePath() {
+			return $this->pluginAbsolutePath;
+		}
+
+		/**
+		 * Register a callback for filtering query arguments.
+		 *
+		 * The callback function should take one argument - an associative array of query arguments.
+		 * It should return a modified array of query arguments.
+		 *
+		 * @uses add_filter() This method is a convenience wrapper for add_filter().
+		 *
+		 * @param callable $callback
+		 * @return void
+		 */
+		public function addQueryArgFilter($callback){
+			$this->addFilter('request_info_query_args', $callback);
+		}
+
+		/**
+		 * Register a callback for filtering arguments passed to wp_remote_get().
+		 *
+		 * The callback function should take one argument - an associative array of arguments -
+		 * and return a modified array or arguments. See the WP documentation on wp_remote_get()
+		 * for details on what arguments are available and how they work.
+		 *
+		 * @uses add_filter() This method is a convenience wrapper for add_filter().
+		 *
+		 * @param callable $callback
+		 * @return void
+		 */
+		public function addHttpRequestArgFilter($callback) {
+			$this->addFilter('request_info_options', $callback);
+		}
+
+		/**
+		 * Register a callback for filtering the plugin info retrieved from the external API.
+		 *
+		 * The callback function should take two arguments. If the plugin info was retrieved
+		 * successfully, the first argument passed will be an instance of  PluginInfo. Otherwise,
+		 * it will be NULL. The second argument will be the corresponding return value of
+		 * wp_remote_get (see WP docs for details).
+		 *
+		 * The callback function should return a new or modified instance of PluginInfo or NULL.
+		 *
+		 * @uses add_filter() This method is a convenience wrapper for add_filter().
+		 *
+		 * @param callable $callback
+		 * @return void
+		 */
+		public function addResultFilter($callback) {
+			$this->addFilter('request_info_result', $callback, 10, 2);
+		}
+
+		protected function createDebugBarExtension() {
+			return new Puc_v4p13_DebugBar_PluginExtension($this);
+		}
+
+		/**
+		 * Create a package instance that represents this plugin or theme.
+		 *
+		 * @return Puc_v4p13_InstalledPackage
+		 */
+		protected function createInstalledPackage() {
+			return new Puc_v4p13_Plugin_Package($this->pluginAbsolutePath, $this);
+		}
+
+		/**
+		 * @return Puc_v4p13_Plugin_Package
+		 */
+		public function getInstalledPackage() {
+			return $this->package;
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/Scheduler.php

@@ -0,0 +1,266 @@
+<?php
+if ( !class_exists('Puc_v4p13_Scheduler', false) ):
+
+	/**
+	 * The scheduler decides when and how often to check for updates.
+	 * It calls @see Puc_v4p13_UpdateChecker::checkForUpdates() to perform the actual checks.
+	 */
+	class Puc_v4p13_Scheduler {
+		public $checkPeriod = 12; //How often to check for updates (in hours).
+		public $throttleRedundantChecks = false; //Check less often if we already know that an update is available.
+		public $throttledCheckPeriod = 72;
+
+		protected $hourlyCheckHooks = array('load-update.php');
+
+		/**
+		 * @var Puc_v4p13_UpdateChecker
+		 */
+		protected $updateChecker;
+
+		private $cronHook = null;
+
+		/**
+		 * Scheduler constructor.
+		 *
+		 * @param Puc_v4p13_UpdateChecker $updateChecker
+		 * @param int $checkPeriod How often to check for updates (in hours).
+		 * @param array $hourlyHooks
+		 */
+		public function __construct($updateChecker, $checkPeriod, $hourlyHooks = array('load-plugins.php')) {
+			$this->updateChecker = $updateChecker;
+			$this->checkPeriod = $checkPeriod;
+
+			//Set up the periodic update checks
+			$this->cronHook = $this->updateChecker->getUniqueName('cron_check_updates');
+			if ( $this->checkPeriod > 0 ){
+
+				//Trigger the check via Cron.
+				//Try to use one of the default schedules if possible as it's less likely to conflict
+				//with other plugins and their custom schedules.
+				$defaultSchedules = array(
+					1  => 'hourly',
+					12 => 'twicedaily',
+					24 => 'daily',
+				);
+				if ( array_key_exists($this->checkPeriod, $defaultSchedules) ) {
+					$scheduleName = $defaultSchedules[$this->checkPeriod];
+				} else {
+					//Use a custom cron schedule.
+					$scheduleName = 'every' . $this->checkPeriod . 'hours';
+					add_filter('cron_schedules', array($this, '_addCustomSchedule'));
+				}
+
+				if ( !wp_next_scheduled($this->cronHook) && !defined('WP_INSTALLING') ) {
+					//Randomly offset the schedule to help prevent update server traffic spikes. Without this
+					//most checks may happen during times of day when people are most likely to install new plugins.
+					$firstCheckTime = time() - rand(0, max($this->checkPeriod * 3600 - 15 * 60, 1));
+					$firstCheckTime = apply_filters(
+						$this->updateChecker->getUniqueName('first_check_time'),
+						$firstCheckTime
+					);
+					wp_schedule_event($firstCheckTime, $scheduleName, $this->cronHook);
+				}
+				add_action($this->cronHook, array($this, 'maybeCheckForUpdates'));
+
+				//In case Cron is disabled or unreliable, we also manually trigger
+				//the periodic checks while the user is browsing the Dashboard.
+				add_action( 'admin_init', array($this, 'maybeCheckForUpdates') );
+
+				//Like WordPress itself, we check more often on certain pages.
+				/** @see wp_update_plugins */
+				add_action('load-update-core.php', array($this, 'maybeCheckForUpdates'));
+				//"load-update.php" and "load-plugins.php" or "load-themes.php".
+				$this->hourlyCheckHooks = array_merge($this->hourlyCheckHooks, $hourlyHooks);
+				foreach($this->hourlyCheckHooks as $hook) {
+					add_action($hook, array($this, 'maybeCheckForUpdates'));
+				}
+				//This hook fires after a bulk update is complete.
+				add_action('upgrader_process_complete', array($this, 'upgraderProcessComplete'), 11, 2);
+
+			} else {
+				//Periodic checks are disabled.
+				wp_clear_scheduled_hook($this->cronHook);
+			}
+		}
+
+		/**
+		 * Runs upon the WP action upgrader_process_complete.
+		 *
+		 * We look at the parameters to decide whether to call maybeCheckForUpdates() or not.
+		 * We also check if the update checker has been removed by the update.
+		 *
+		 * @param WP_Upgrader $upgrader  WP_Upgrader instance
+		 * @param array $upgradeInfo extra information about the upgrade
+		 */
+		public function upgraderProcessComplete(
+			/** @noinspection PhpUnusedParameterInspection */
+			$upgrader, $upgradeInfo
+		) {
+			//Cancel all further actions if the current version of PUC has been deleted or overwritten
+			//by a different version during the upgrade. If we try to do anything more in that situation,
+			//we could trigger a fatal error by trying to autoload a deleted class.
+			clearstatcache();
+			if ( !file_exists(__FILE__) ) {
+				$this->removeHooks();
+				$this->updateChecker->removeHooks();
+				return;
+			}
+
+			//Sanity check and limitation to relevant types.
+			if (
+				!is_array($upgradeInfo) || !isset($upgradeInfo['type'], $upgradeInfo['action'])
+				|| 'update' !== $upgradeInfo['action'] || !in_array($upgradeInfo['type'], array('plugin', 'theme'))
+			) {
+				return;
+			}
+
+			//Filter out notifications of upgrades that should have no bearing upon whether or not our
+			//current info is up-to-date.
+			if ( is_a($this->updateChecker, 'Puc_v4p13_Theme_UpdateChecker') ) {
+				if ( 'theme' !== $upgradeInfo['type'] || !isset($upgradeInfo['themes']) ) {
+					return;
+				}
+
+				//Letting too many things going through for checks is not a real problem, so we compare widely.
+				if ( !in_array(
+					strtolower($this->updateChecker->directoryName),
+					array_map('strtolower', $upgradeInfo['themes'])
+				) ) {
+					return;
+				}
+			}
+
+			if ( is_a($this->updateChecker, 'Puc_v4p13_Plugin_UpdateChecker') ) {
+				if ( 'plugin' !== $upgradeInfo['type'] || !isset($upgradeInfo['plugins']) ) {
+					return;
+				}
+
+				//Themes pass in directory names in the information array, but plugins use the relative plugin path.
+				if ( !in_array(
+					strtolower($this->updateChecker->directoryName),
+					array_map('dirname', array_map('strtolower', $upgradeInfo['plugins']))
+				) ) {
+					return;
+				}
+			}
+
+			$this->maybeCheckForUpdates();
+		}
+
+		/**
+		 * Check for updates if the configured check interval has already elapsed.
+		 * Will use a shorter check interval on certain admin pages like "Dashboard -> Updates" or when doing cron.
+		 *
+		 * You can override the default behaviour by using the "puc_check_now-$slug" filter.
+		 * The filter callback will be passed three parameters:
+		 *     - Current decision. TRUE = check updates now, FALSE = don't check now.
+		 *     - Last check time as a Unix timestamp.
+		 *     - Configured check period in hours.
+		 * Return TRUE to check for updates immediately, or FALSE to cancel.
+		 *
+		 * This method is declared public because it's a hook callback. Calling it directly is not recommended.
+		 */
+		public function maybeCheckForUpdates() {
+			if ( empty($this->checkPeriod) ){
+				return;
+			}
+
+			$state = $this->updateChecker->getUpdateState();
+			$shouldCheck = ($state->timeSinceLastCheck() >= $this->getEffectiveCheckPeriod());
+
+			//Let plugin authors substitute their own algorithm.
+			$shouldCheck = apply_filters(
+				$this->updateChecker->getUniqueName('check_now'),
+				$shouldCheck,
+				$state->getLastCheck(),
+				$this->checkPeriod
+			);
+
+			if ( $shouldCheck ) {
+				$this->updateChecker->checkForUpdates();
+			}
+		}
+
+		/**
+		 * Calculate the actual check period based on the current status and environment.
+		 *
+		 * @return int Check period in seconds.
+		 */
+		protected function getEffectiveCheckPeriod() {
+			$currentFilter = current_filter();
+			if ( in_array($currentFilter, array('load-update-core.php', 'upgrader_process_complete')) ) {
+				//Check more often when the user visits "Dashboard -> Updates" or does a bulk update.
+				$period = 60;
+			} else if ( in_array($currentFilter, $this->hourlyCheckHooks) ) {
+				//Also check more often on /wp-admin/update.php and the "Plugins" or "Themes" page.
+				$period = 3600;
+			} else if ( $this->throttleRedundantChecks && ($this->updateChecker->getUpdate() !== null) ) {
+				//Check less frequently if it's already known that an update is available.
+				$period = $this->throttledCheckPeriod * 3600;
+			} else if ( defined('DOING_CRON') && constant('DOING_CRON') ) {
+				//WordPress cron schedules are not exact, so lets do an update check even
+				//if slightly less than $checkPeriod hours have elapsed since the last check.
+				$cronFuzziness = 20 * 60;
+				$period = $this->checkPeriod * 3600 - $cronFuzziness;
+			} else {
+				$period = $this->checkPeriod * 3600;
+			}
+
+			return $period;
+		}
+
+		/**
+		 * Add our custom schedule to the array of Cron schedules used by WP.
+		 *
+		 * @param array $schedules
+		 * @return array
+		 */
+		public function _addCustomSchedule($schedules) {
+			if ( $this->checkPeriod && ($this->checkPeriod > 0) ){
+				$scheduleName = 'every' . $this->checkPeriod . 'hours';
+				$schedules[$scheduleName] = array(
+					'interval' => $this->checkPeriod * 3600,
+					'display' => sprintf('Every %d hours', $this->checkPeriod),
+				);
+			}
+			return $schedules;
+		}
+
+		/**
+		 * Remove the scheduled cron event that the library uses to check for updates.
+		 *
+		 * @return void
+		 */
+		public function removeUpdaterCron() {
+			wp_clear_scheduled_hook($this->cronHook);
+		}
+
+		/**
+		 * Get the name of the update checker's WP-cron hook. Mostly useful for debugging.
+		 *
+		 * @return string
+		 */
+		public function getCronHookName() {
+			return $this->cronHook;
+		}
+
+		/**
+		 * Remove most hooks added by the scheduler.
+		 */
+		public function removeHooks() {
+			remove_filter('cron_schedules', array($this, '_addCustomSchedule'));
+			remove_action('admin_init', array($this, 'maybeCheckForUpdates'));
+			remove_action('load-update-core.php', array($this, 'maybeCheckForUpdates'));
+
+			if ( $this->cronHook !== null ) {
+				remove_action($this->cronHook, array($this, 'maybeCheckForUpdates'));
+			}
+			if ( !empty($this->hourlyCheckHooks) ) {
+				foreach ($this->hourlyCheckHooks as $hook) {
+					remove_action($hook, array($this, 'maybeCheckForUpdates'));
+				}
+			}
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/StateStore.php

@@ -0,0 +1,216 @@
+<?php
+
+if ( !class_exists('Puc_v4p13_StateStore', false) ):
+
+	class Puc_v4p13_StateStore {
+		/**
+		 * @var int Last update check timestamp.
+		 */
+		protected $lastCheck = 0;
+
+		/**
+		 * @var string Version number.
+		 */
+		protected $checkedVersion = '';
+
+		/**
+		 * @var Puc_v4p13_Update|null Cached update.
+		 */
+		protected $update = null;
+
+		/**
+		 * @var string Site option name.
+		 */
+		private $optionName = '';
+
+		/**
+		 * @var bool Whether we've already tried to load the state from the database.
+		 */
+		private $isLoaded = false;
+
+		public function __construct($optionName) {
+			$this->optionName = $optionName;
+		}
+
+		/**
+		 * Get time elapsed since the last update check.
+		 *
+		 * If there are no recorded update checks, this method returns a large arbitrary number
+		 * (i.e. time since the Unix epoch).
+		 *
+		 * @return int Elapsed time in seconds.
+		 */
+		public function timeSinceLastCheck() {
+			$this->lazyLoad();
+			return time() - $this->lastCheck;
+		}
+
+		/**
+		 * @return int
+		 */
+		public function getLastCheck() {
+			$this->lazyLoad();
+			return $this->lastCheck;
+		}
+
+		/**
+		 * Set the time of the last update check to the current timestamp.
+		 *
+		 * @return $this
+		 */
+		public function setLastCheckToNow() {
+			$this->lazyLoad();
+			$this->lastCheck = time();
+			return $this;
+		}
+
+		/**
+		 * @return null|Puc_v4p13_Update
+		 */
+		public function getUpdate() {
+			$this->lazyLoad();
+			return $this->update;
+		}
+
+		/**
+		 * @param Puc_v4p13_Update|null $update
+		 * @return $this
+		 */
+		public function setUpdate(Puc_v4p13_Update $update = null) {
+			$this->lazyLoad();
+			$this->update = $update;
+			return $this;
+		}
+
+		/**
+		 * @return string
+		 */
+		public function getCheckedVersion() {
+			$this->lazyLoad();
+			return $this->checkedVersion;
+		}
+
+		/**
+		 * @param string $version
+		 * @return $this
+		 */
+		public function setCheckedVersion($version) {
+			$this->lazyLoad();
+			$this->checkedVersion = strval($version);
+			return $this;
+		}
+
+		/**
+		 * Get translation updates.
+		 *
+		 * @return array
+		 */
+		public function getTranslations() {
+			$this->lazyLoad();
+			if ( isset($this->update, $this->update->translations) ) {
+				return $this->update->translations;
+			}
+			return array();
+		}
+
+		/**
+		 * Set translation updates.
+		 *
+		 * @param array $translationUpdates
+		 */
+		public function setTranslations($translationUpdates) {
+			$this->lazyLoad();
+			if ( isset($this->update) ) {
+				$this->update->translations = $translationUpdates;
+				$this->save();
+			}
+		}
+
+		public function save() {
+			$state = new stdClass();
+
+			$state->lastCheck = $this->lastCheck;
+			$state->checkedVersion = $this->checkedVersion;
+
+			if ( isset($this->update)) {
+				$state->update = $this->update->toStdClass();
+
+				$updateClass = get_class($this->update);
+				$state->updateClass = $updateClass;
+				$prefix = $this->getLibPrefix();
+				if ( Puc_v4p13_Utils::startsWith($updateClass, $prefix) ) {
+					$state->updateBaseClass = substr($updateClass, strlen($prefix));
+				}
+			}
+
+			update_site_option($this->optionName, $state);
+			$this->isLoaded = true;
+		}
+
+		/**
+		 * @return $this
+		 */
+		public function lazyLoad() {
+			if ( !$this->isLoaded ) {
+				$this->load();
+			}
+			return $this;
+		}
+
+		protected function load() {
+			$this->isLoaded = true;
+
+			$state = get_site_option($this->optionName, null);
+
+			if ( !is_object($state) ) {
+				$this->lastCheck = 0;
+				$this->checkedVersion = '';
+				$this->update = null;
+				return;
+			}
+
+			$this->lastCheck = intval(Puc_v4p13_Utils::get($state, 'lastCheck', 0));
+			$this->checkedVersion = Puc_v4p13_Utils::get($state, 'checkedVersion', '');
+			$this->update = null;
+
+			if ( isset($state->update) ) {
+				//This mess is due to the fact that the want the update class from this version
+				//of the library, not the version that saved the update.
+
+				$updateClass = null;
+				if ( isset($state->updateBaseClass) ) {
+					$updateClass = $this->getLibPrefix() . $state->updateBaseClass;
+				} else if ( isset($state->updateClass) ) {
+					$updateClass = $state->updateClass;
+				}
+
+				if ( ($updateClass !== null) && class_exists($updateClass) ) {
+					$this->update = call_user_func(array($updateClass, 'fromObject'), $state->update);
+				}
+			}
+		}
+
+		public function delete() {
+			delete_site_option($this->optionName);
+
+			$this->lastCheck = 0;
+			$this->checkedVersion = '';
+			$this->update = null;
+		}
+
+		private function getLibPrefix() {
+			$lastSlashPos = strrpos(__CLASS__, '\\');
+			if ( $lastSlashPos !== false ) {
+				$namespacePrefix = substr(__CLASS__, 0, $lastSlashPos + 1);
+				$className = substr(__CLASS__, $lastSlashPos + 1);
+			} else {
+				$namespacePrefix = '';
+				$className = __CLASS__;
+			}
+
+			$parts = explode('_', $className, 3);
+			return $namespacePrefix . $parts[0] . '_' . $parts[1] . '_';
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/Theme/Package.php

@@ -0,0 +1,65 @@
+<?php
+if ( !class_exists('Puc_v4p13_Theme_Package', false) ):
+
+	class Puc_v4p13_Theme_Package extends Puc_v4p13_InstalledPackage {
+		/**
+		 * @var string Theme directory name.
+		 */
+		protected $stylesheet;
+
+		/**
+		 * @var WP_Theme Theme object.
+		 */
+		protected $theme;
+
+		public function __construct($stylesheet, $updateChecker) {
+			$this->stylesheet = $stylesheet;
+			$this->theme = wp_get_theme($this->stylesheet);
+
+			parent::__construct($updateChecker);
+		}
+
+		public function getInstalledVersion() {
+			return $this->theme->get('Version');
+		}
+
+		public function getAbsoluteDirectoryPath() {
+			if ( method_exists($this->theme, 'get_stylesheet_directory') ) {
+				return $this->theme->get_stylesheet_directory(); //Available since WP 3.4.
+			}
+			return get_theme_root($this->stylesheet) . '/' . $this->stylesheet;
+		}
+
+		/**
+		 * Get the value of a specific plugin or theme header.
+		 *
+		 * @param string $headerName
+		 * @param string $defaultValue
+		 * @return string Either the value of the header, or $defaultValue if the header doesn't exist or is empty.
+		 */
+		public function getHeaderValue($headerName, $defaultValue = '') {
+			$value = $this->theme->get($headerName);
+			if ( ($headerName === false) || ($headerName === '') ) {
+				return $defaultValue;
+			}
+			return $value;
+		}
+
+		protected function getHeaderNames() {
+			return array(
+				'Name'        => 'Theme Name',
+				'ThemeURI'    => 'Theme URI',
+				'Description' => 'Description',
+				'Author'      => 'Author',
+				'AuthorURI'   => 'Author URI',
+				'Version'     => 'Version',
+				'Template'    => 'Template',
+				'Status'      => 'Status',
+				'Tags'        => 'Tags',
+				'TextDomain'  => 'Text Domain',
+				'DomainPath'  => 'Domain Path',
+			);
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/Theme/Update.php

@@ -0,0 +1,84 @@
+<?php
+
+if ( !class_exists('Puc_v4p13_Theme_Update', false) ):
+
+	class Puc_v4p13_Theme_Update extends Puc_v4p13_Update {
+		public $details_url = '';
+
+		protected static $extraFields = array('details_url');
+
+		/**
+		 * Transform the metadata into the format used by WordPress core.
+		 * Note the inconsistency: WP stores plugin updates as objects and theme updates as arrays.
+		 *
+		 * @return array
+		 */
+		public function toWpFormat() {
+			$update = array(
+				'theme' => $this->slug,
+				'new_version' => $this->version,
+				'url' => $this->details_url,
+			);
+
+			if ( !empty($this->download_url) ) {
+				$update['package'] = $this->download_url;
+			}
+
+			return $update;
+		}
+
+		/**
+		 * Create a new instance of Theme_Update from its JSON-encoded representation.
+		 *
+		 * @param string $json Valid JSON string representing a theme information object.
+		 * @return self New instance of ThemeUpdate, or NULL on error.
+		 */
+		public static function fromJson($json) {
+			$instance = new self();
+			if ( !parent::createFromJson($json, $instance) ) {
+				return null;
+			}
+			return $instance;
+		}
+
+		/**
+		 * Create a new instance by copying the necessary fields from another object.
+		 *
+		 * @param StdClass|Puc_v4p13_Theme_Update $object The source object.
+		 * @return Puc_v4p13_Theme_Update The new copy.
+		 */
+		public static function fromObject($object) {
+			$update = new self();
+			$update->copyFields($object, $update);
+			return $update;
+		}
+
+		/**
+		 * Basic validation.
+		 *
+		 * @param StdClass $apiResponse
+		 * @return bool|WP_Error
+		 */
+		protected function validateMetadata($apiResponse) {
+			$required = array('version', 'details_url');
+			foreach($required as $key) {
+				if ( !isset($apiResponse->$key) || empty($apiResponse->$key) ) {
+					return new WP_Error(
+						'tuc-invalid-metadata',
+						sprintf('The theme metadata is missing the required "%s" key.', $key)
+					);
+				}
+			}
+			return true;
+		}
+
+		protected function getFieldNames() {
+			return array_merge(parent::getFieldNames(), self::$extraFields);
+		}
+
+		protected function getPrefixedFilter($tag) {
+			return parent::getPrefixedFilter($tag) . '_theme';
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/Theme/UpdateChecker.php

@@ -0,0 +1,152 @@
+<?php
+
+if ( !class_exists('Puc_v4p13_Theme_UpdateChecker', false) ):
+
+	class Puc_v4p13_Theme_UpdateChecker extends Puc_v4p13_UpdateChecker {
+		protected $filterSuffix = 'theme';
+		protected $updateTransient = 'update_themes';
+		protected $translationType = 'theme';
+
+		/**
+		 * @var string Theme directory name.
+		 */
+		protected $stylesheet;
+
+		public function __construct($metadataUrl, $stylesheet = null, $customSlug = null, $checkPeriod = 12, $optionName = '') {
+			if ( $stylesheet === null ) {
+				$stylesheet = get_stylesheet();
+			}
+			$this->stylesheet = $stylesheet;
+
+			parent::__construct(
+				$metadataUrl,
+				$stylesheet,
+				$customSlug ? $customSlug : $stylesheet,
+				$checkPeriod,
+				$optionName
+			);
+		}
+
+		/**
+		 * For themes, the update array is indexed by theme directory name.
+		 *
+		 * @return string
+		 */
+		protected function getUpdateListKey() {
+			return $this->directoryName;
+		}
+
+		/**
+		 * Retrieve the latest update (if any) from the configured API endpoint.
+		 *
+		 * @return Puc_v4p13_Update|null An instance of Update, or NULL when no updates are available.
+		 */
+		public function requestUpdate() {
+			list($themeUpdate, $result) = $this->requestMetadata('Puc_v4p13_Theme_Update', 'request_update');
+
+			if ( $themeUpdate !== null ) {
+				/** @var Puc_v4p13_Theme_Update $themeUpdate */
+				$themeUpdate->slug = $this->slug;
+			}
+
+			$themeUpdate = $this->filterUpdateResult($themeUpdate, $result);
+			return $themeUpdate;
+		}
+
+		protected function getNoUpdateItemFields() {
+			return array_merge(
+				parent::getNoUpdateItemFields(),
+				array(
+					'theme'        => $this->directoryName,
+					'requires'     => '',
+				)
+			);
+		}
+
+		public function userCanInstallUpdates() {
+			return current_user_can('update_themes');
+		}
+
+		/**
+		 * Create an instance of the scheduler.
+		 *
+		 * @param int $checkPeriod
+		 * @return Puc_v4p13_Scheduler
+		 */
+		protected function createScheduler($checkPeriod) {
+			return new Puc_v4p13_Scheduler($this, $checkPeriod, array('load-themes.php'));
+		}
+
+		/**
+		 * Is there an update being installed right now for this theme?
+		 *
+		 * @param WP_Upgrader|null $upgrader The upgrader that's performing the current update.
+		 * @return bool
+		 */
+		public function isBeingUpgraded($upgrader = null) {
+			return $this->upgraderStatus->isThemeBeingUpgraded($this->stylesheet, $upgrader);
+		}
+
+		protected function createDebugBarExtension() {
+			return new Puc_v4p13_DebugBar_Extension($this, 'Puc_v4p13_DebugBar_ThemePanel');
+		}
+
+		/**
+		 * Register a callback for filtering query arguments.
+		 *
+		 * The callback function should take one argument - an associative array of query arguments.
+		 * It should return a modified array of query arguments.
+		 *
+		 * @param callable $callback
+		 * @return void
+		 */
+		public function addQueryArgFilter($callback){
+			$this->addFilter('request_update_query_args', $callback);
+		}
+
+		/**
+		 * Register a callback for filtering arguments passed to wp_remote_get().
+		 *
+		 * The callback function should take one argument - an associative array of arguments -
+		 * and return a modified array or arguments. See the WP documentation on wp_remote_get()
+		 * for details on what arguments are available and how they work.
+		 *
+		 * @uses add_filter() This method is a convenience wrapper for add_filter().
+		 *
+		 * @param callable $callback
+		 * @return void
+		 */
+		public function addHttpRequestArgFilter($callback) {
+			$this->addFilter('request_update_options', $callback);
+		}
+
+		/**
+		 * Register a callback for filtering theme updates retrieved from the external API.
+		 *
+		 * The callback function should take two arguments. If the theme update was retrieved
+		 * successfully, the first argument passed will be an instance of Theme_Update. Otherwise,
+		 * it will be NULL. The second argument will be the corresponding return value of
+		 * wp_remote_get (see WP docs for details).
+		 *
+		 * The callback function should return a new or modified instance of Theme_Update or NULL.
+		 *
+		 * @uses add_filter() This method is a convenience wrapper for add_filter().
+		 *
+		 * @param callable $callback
+		 * @return void
+		 */
+		public function addResultFilter($callback) {
+			$this->addFilter('request_update_result', $callback, 10, 2);
+		}
+
+		/**
+		 * Create a package instance that represents this plugin or theme.
+		 *
+		 * @return Puc_v4p13_InstalledPackage
+		 */
+		protected function createInstalledPackage() {
+			return new Puc_v4p13_Theme_Package($this->stylesheet, $this);
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/Update.php

@@ -0,0 +1,34 @@
+<?php
+if ( !class_exists('Puc_v4p13_Update', false) ):
+
+	/**
+	 * A simple container class for holding information about an available update.
+	 *
+	 * @author Janis Elsts
+	 * @access public
+	 */
+	abstract class Puc_v4p13_Update extends Puc_v4p13_Metadata {
+		public $slug;
+		public $version;
+		public $download_url;
+		public $translations = array();
+
+		/**
+		 * @return string[]
+		 */
+		protected function getFieldNames() {
+			return array('slug', 'version', 'download_url', 'translations');
+		}
+
+		public function toWpFormat() {
+			$update = new stdClass();
+
+			$update->slug = $this->slug;
+			$update->new_version = $this->version;
+			$update->package = $this->download_url;
+
+			return $update;
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/UpdateChecker.php

@@ -0,0 +1,997 @@
+<?php
+
+if ( !class_exists('Puc_v4p13_UpdateChecker', false) ):
+
+	abstract class Puc_v4p13_UpdateChecker {
+		protected $filterSuffix = '';
+		protected $updateTransient = '';
+		protected $translationType = ''; //"plugin" or "theme".
+
+		/**
+		 * Set to TRUE to enable error reporting. Errors are raised using trigger_error()
+		 * and should be logged to the standard PHP error log.
+		 * @var bool
+		 */
+		public $debugMode = null;
+
+		/**
+		 * @var string Where to store the update info.
+		 */
+		public $optionName = '';
+
+		/**
+		 * @var string The URL of the metadata file.
+		 */
+		public $metadataUrl = '';
+
+		/**
+		 * @var string Plugin or theme directory name.
+		 */
+		public $directoryName = '';
+
+		/**
+		 * @var string The slug that will be used in update checker hooks and remote API requests.
+		 * Usually matches the directory name unless the plugin/theme directory has been renamed.
+		 */
+		public $slug = '';
+
+		/**
+		 * @var Puc_v4p13_InstalledPackage
+		 */
+		protected $package;
+
+		/**
+		 * @var Puc_v4p13_Scheduler
+		 */
+		public $scheduler;
+
+		/**
+		 * @var Puc_v4p13_UpgraderStatus
+		 */
+		protected $upgraderStatus;
+
+		/**
+		 * @var Puc_v4p13_StateStore
+		 */
+		protected $updateState;
+
+		/**
+		 * @var array List of API errors triggered during the last checkForUpdates() call.
+		 */
+		protected $lastRequestApiErrors = array();
+
+		/**
+		 * @var string|mixed The default is 0 because parse_url() can return NULL or FALSE.
+		 */
+		protected $cachedMetadataHost = 0;
+
+		/**
+		 * @var Puc_v4p13_DebugBar_Extension|null
+		 */
+		protected $debugBarExtension = null;
+
+		public function __construct($metadataUrl, $directoryName, $slug = null, $checkPeriod = 12, $optionName = '') {
+			$this->debugMode = (bool)(constant('WP_DEBUG'));
+			$this->metadataUrl = $metadataUrl;
+			$this->directoryName = $directoryName;
+			$this->slug = !empty($slug) ? $slug : $this->directoryName;
+
+			$this->optionName = $optionName;
+			if ( empty($this->optionName) ) {
+				//BC: Initially the library only supported plugin updates and didn't use type prefixes
+				//in the option name. Lets use the same prefix-less name when possible.
+				if ( $this->filterSuffix === '' ) {
+					$this->optionName = 'external_updates-' . $this->slug;
+				} else {
+					$this->optionName = $this->getUniqueName('external_updates');
+				}
+			}
+
+			$this->package = $this->createInstalledPackage();
+			$this->scheduler = $this->createScheduler($checkPeriod);
+			$this->upgraderStatus = new Puc_v4p13_UpgraderStatus();
+			$this->updateState = new Puc_v4p13_StateStore($this->optionName);
+
+			if ( did_action('init') ) {
+				$this->loadTextDomain();
+			} else {
+				add_action('init', array($this, 'loadTextDomain'));
+			}
+
+			$this->installHooks();
+		}
+
+		/**
+		 * @internal
+		 */
+		public function loadTextDomain() {
+			//We're not using load_plugin_textdomain() or its siblings because figuring out where
+			//the library is located (plugin, mu-plugin, theme, custom wp-content paths) is messy.
+			$domain = 'plugin-update-checker';
+			$locale = apply_filters(
+				'plugin_locale',
+				(is_admin() && function_exists('get_user_locale')) ? get_user_locale() : get_locale(),
+				$domain
+			);
+
+			$moFile = $domain . '-' . $locale . '.mo';
+			$path = realpath(dirname(__FILE__) . '/../../languages');
+
+			if ($path && file_exists($path)) {
+				load_textdomain($domain, $path . '/' . $moFile);
+			}
+		}
+
+		protected function installHooks() {
+			//Insert our update info into the update array maintained by WP.
+			add_filter('site_transient_' . $this->updateTransient, array($this,'injectUpdate'));
+
+			//Insert translation updates into the update list.
+			add_filter('site_transient_' . $this->updateTransient, array($this, 'injectTranslationUpdates'));
+
+			//Clear translation updates when WP clears the update cache.
+			//This needs to be done directly because the library doesn't actually remove obsolete plugin updates,
+			//it just hides them (see getUpdate()). We can't do that with translations - too much disk I/O.
+			add_action(
+				'delete_site_transient_' . $this->updateTransient,
+				array($this, 'clearCachedTranslationUpdates')
+			);
+
+			//Rename the update directory to be the same as the existing directory.
+			if ( $this->directoryName !== '.' ) {
+				add_filter('upgrader_source_selection', array($this, 'fixDirectoryName'), 10, 3);
+			}
+
+			//Allow HTTP requests to the metadata URL even if it's on a local host.
+			add_filter('http_request_host_is_external', array($this, 'allowMetadataHost'), 10, 2);
+
+			//DebugBar integration.
+			if ( did_action('plugins_loaded') ) {
+				$this->maybeInitDebugBar();
+			} else {
+				add_action('plugins_loaded', array($this, 'maybeInitDebugBar'));
+			}
+		}
+
+		/**
+		 * Remove hooks that were added by this update checker instance.
+		 */
+		public function removeHooks() {
+			remove_filter('site_transient_' . $this->updateTransient, array($this,'injectUpdate'));
+			remove_filter('site_transient_' . $this->updateTransient, array($this, 'injectTranslationUpdates'));
+			remove_action(
+				'delete_site_transient_' . $this->updateTransient,
+				array($this, 'clearCachedTranslationUpdates')
+			);
+
+			remove_filter('upgrader_source_selection', array($this, 'fixDirectoryName'), 10);
+			remove_filter('http_request_host_is_external', array($this, 'allowMetadataHost'), 10);
+			remove_action('plugins_loaded', array($this, 'maybeInitDebugBar'));
+
+			remove_action('init', array($this, 'loadTextDomain'));
+
+			if ( $this->scheduler ) {
+				$this->scheduler->removeHooks();
+			}
+
+			if ( $this->debugBarExtension ) {
+				$this->debugBarExtension->removeHooks();
+			}
+		}
+
+		/**
+		 * Check if the current user has the required permissions to install updates.
+		 *
+		 * @return bool
+		 */
+		abstract public function userCanInstallUpdates();
+
+		/**
+		 * Explicitly allow HTTP requests to the metadata URL.
+		 *
+		 * WordPress has a security feature where the HTTP API will reject all requests that are sent to
+		 * another site hosted on the same server as the current site (IP match), a local host, or a local
+		 * IP, unless the host exactly matches the current site.
+		 *
+		 * This feature is opt-in (at least in WP 4.4). Apparently some people enable it.
+		 *
+		 * That can be a problem when you're developing your plugin and you decide to host the update information
+		 * on the same server as your test site. Update requests will mysteriously fail.
+		 *
+		 * We fix that by adding an exception for the metadata host.
+		 *
+		 * @param bool $allow
+		 * @param string $host
+		 * @return bool
+		 */
+		public function allowMetadataHost($allow, $host) {
+			if ( $this->cachedMetadataHost === 0 ) {
+				$this->cachedMetadataHost = parse_url($this->metadataUrl, PHP_URL_HOST);
+			}
+
+			if ( is_string($this->cachedMetadataHost) && (strtolower($host) === strtolower($this->cachedMetadataHost)) ) {
+				return true;
+			}
+			return $allow;
+		}
+
+		/**
+		 * Create a package instance that represents this plugin or theme.
+		 *
+		 * @return Puc_v4p13_InstalledPackage
+		 */
+		abstract protected function createInstalledPackage();
+
+		/**
+		 * @return Puc_v4p13_InstalledPackage
+		 */
+		public function getInstalledPackage() {
+			return $this->package;
+		}
+
+		/**
+		 * Create an instance of the scheduler.
+		 *
+		 * This is implemented as a method to make it possible for plugins to subclass the update checker
+		 * and substitute their own scheduler.
+		 *
+		 * @param int $checkPeriod
+		 * @return Puc_v4p13_Scheduler
+		 */
+		abstract protected function createScheduler($checkPeriod);
+
+		/**
+		 * Check for updates. The results are stored in the DB option specified in $optionName.
+		 *
+		 * @return Puc_v4p13_Update|null
+		 */
+		public function checkForUpdates() {
+			$installedVersion = $this->getInstalledVersion();
+			//Fail silently if we can't find the plugin/theme or read its header.
+			if ( $installedVersion === null ) {
+				$this->triggerError(
+					sprintf('Skipping update check for %s - installed version unknown.', $this->slug),
+					E_USER_WARNING
+				);
+				return null;
+			}
+
+			//Start collecting API errors.
+			$this->lastRequestApiErrors = array();
+			add_action('puc_api_error', array($this, 'collectApiErrors'), 10, 4);
+
+			$state = $this->updateState;
+			$state->setLastCheckToNow()
+				->setCheckedVersion($installedVersion)
+				->save(); //Save before checking in case something goes wrong
+
+			$state->setUpdate($this->requestUpdate());
+			$state->save();
+
+			//Stop collecting API errors.
+			remove_action('puc_api_error', array($this, 'collectApiErrors'), 10);
+
+			return $this->getUpdate();
+		}
+
+		/**
+		 * Load the update checker state from the DB.
+		 *
+		 * @return Puc_v4p13_StateStore
+		 */
+		public function getUpdateState() {
+			return $this->updateState->lazyLoad();
+		}
+
+		/**
+		 * Reset update checker state - i.e. last check time, cached update data and so on.
+		 *
+		 * Call this when your plugin is being uninstalled, or if you want to
+		 * clear the update cache.
+		 */
+		public function resetUpdateState() {
+			$this->updateState->delete();
+		}
+
+		/**
+		 * Get the details of the currently available update, if any.
+		 *
+		 * If no updates are available, or if the last known update version is below or equal
+		 * to the currently installed version, this method will return NULL.
+		 *
+		 * Uses cached update data. To retrieve update information straight from
+		 * the metadata URL, call requestUpdate() instead.
+		 *
+		 * @return Puc_v4p13_Update|null
+		 */
+		public function getUpdate() {
+			$update = $this->updateState->getUpdate();
+
+			//Is there an update available?
+			if ( isset($update) ) {
+				//Check if the update is actually newer than the currently installed version.
+				$installedVersion = $this->getInstalledVersion();
+				if ( ($installedVersion !== null) && version_compare($update->version, $installedVersion, '>') ){
+					return $update;
+				}
+			}
+			return null;
+		}
+
+		/**
+		 * Retrieve the latest update (if any) from the configured API endpoint.
+		 *
+		 * Subclasses should run the update through filterUpdateResult before returning it.
+		 *
+		 * @return Puc_v4p13_Update An instance of Update, or NULL when no updates are available.
+		 */
+		abstract public function requestUpdate();
+
+		/**
+		 * Filter the result of a requestUpdate() call.
+		 *
+		 * @param Puc_v4p13_Update|null $update
+		 * @param array|WP_Error|null $httpResult The value returned by wp_remote_get(), if any.
+		 * @return Puc_v4p13_Update
+		 */
+		protected function filterUpdateResult($update, $httpResult = null) {
+			//Let plugins/themes modify the update.
+			$update = apply_filters($this->getUniqueName('request_update_result'), $update, $httpResult);
+
+			$this->fixSupportedWordpressVersion($update);
+
+			if ( isset($update, $update->translations) ) {
+				//Keep only those translation updates that apply to this site.
+				$update->translations = $this->filterApplicableTranslations($update->translations);
+			}
+
+			return $update;
+		}
+
+		/**
+		 * The "Tested up to" field in the plugin metadata is supposed to be in the form of "major.minor",
+		 * while WordPress core's list_plugin_updates() expects the $update->tested field to be an exact
+		 * version, e.g. "major.minor.patch", to say it's compatible. In other case it shows
+		 * "Compatibility: Unknown".
+		 * The function mimics how wordpress.org API crafts the "tested" field out of "Tested up to".
+		 *
+		 * @param Puc_v4p13_Metadata|null $update
+		 */
+		protected function fixSupportedWordpressVersion(Puc_v4p13_Metadata $update = null) {
+			if ( !isset($update->tested) || !preg_match('/^\d++\.\d++$/', $update->tested) ) {
+				return;
+			}
+
+			$actualWpVersions = array();
+
+			$wpVersion = $GLOBALS['wp_version'];
+
+			if ( function_exists('get_core_updates') ) {
+				$coreUpdates = get_core_updates();
+				if ( is_array($coreUpdates) ) {
+					foreach ($coreUpdates as $coreUpdate) {
+						if ( isset($coreUpdate->current) ) {
+							$actualWpVersions[] = $coreUpdate->current;
+						}
+					}
+				}
+			}
+
+			$actualWpVersions[] = $wpVersion;
+
+			$actualWpPatchNumber = null;
+			foreach ($actualWpVersions as $version) {
+				if ( preg_match('/^(?P<majorMinor>\d++\.\d++)(?:\.(?P<patch>\d++))?/', $version, $versionParts) ) {
+					if ( $versionParts['majorMinor'] === $update->tested ) {
+						$patch = isset($versionParts['patch']) ? intval($versionParts['patch']) : 0;
+						if ( $actualWpPatchNumber === null ) {
+							$actualWpPatchNumber = $patch;
+						} else {
+							$actualWpPatchNumber = max($actualWpPatchNumber, $patch);
+						}
+					}
+				}
+			}
+			if ( $actualWpPatchNumber === null ) {
+				$actualWpPatchNumber = 999;
+			}
+
+			if ( $actualWpPatchNumber > 0 ) {
+				$update->tested .= '.' . $actualWpPatchNumber;
+			}
+		}
+
+		/**
+		 * Get the currently installed version of the plugin or theme.
+		 *
+		 * @return string|null Version number.
+		 */
+		public function getInstalledVersion() {
+			return $this->package->getInstalledVersion();
+		}
+
+		/**
+		 * Get the full path of the plugin or theme directory.
+		 *
+		 * @return string
+		 */
+		public function getAbsoluteDirectoryPath() {
+			return $this->package->getAbsoluteDirectoryPath();
+		}
+
+		/**
+		 * Trigger a PHP error, but only when $debugMode is enabled.
+		 *
+		 * @param string $message
+		 * @param int $errorType
+		 */
+		public function triggerError($message, $errorType) {
+			if ( $this->isDebugModeEnabled() ) {
+				trigger_error($message, $errorType);
+			}
+		}
+
+		/**
+		 * @return bool
+		 */
+		protected function isDebugModeEnabled() {
+			if ( $this->debugMode === null ) {
+				$this->debugMode = (bool)(constant('WP_DEBUG'));
+			}
+			return $this->debugMode;
+		}
+
+		/**
+		 * Get the full name of an update checker filter, action or DB entry.
+		 *
+		 * This method adds the "puc_" prefix and the "-$slug" suffix to the filter name.
+		 * For example, "pre_inject_update" becomes "puc_pre_inject_update-plugin-slug".
+		 *
+		 * @param string $baseTag
+		 * @return string
+		 */
+		public function getUniqueName($baseTag) {
+			$name = 'puc_' . $baseTag;
+			if ( $this->filterSuffix !== '' ) {
+				$name .= '_' . $this->filterSuffix;
+			}
+			return $name . '-' . $this->slug;
+		}
+
+		/**
+		 * Store API errors that are generated when checking for updates.
+		 *
+		 * @internal
+		 * @param WP_Error $error
+		 * @param array|null $httpResponse
+		 * @param string|null $url
+		 * @param string|null $slug
+		 */
+		public function collectApiErrors($error, $httpResponse = null, $url = null, $slug = null) {
+			if ( isset($slug) && ($slug !== $this->slug) ) {
+				return;
+			}
+
+			$this->lastRequestApiErrors[] = array(
+				'error'        => $error,
+				'httpResponse' => $httpResponse,
+				'url'          => $url,
+			);
+		}
+
+		/**
+		 * @return array
+		 */
+		public function getLastRequestApiErrors() {
+			return $this->lastRequestApiErrors;
+		}
+
+		/* -------------------------------------------------------------------
+		 * PUC filters and filter utilities
+		 * -------------------------------------------------------------------
+		 */
+
+		/**
+		 * Register a callback for one of the update checker filters.
+		 *
+		 * Identical to add_filter(), except it automatically adds the "puc_" prefix
+		 * and the "-$slug" suffix to the filter name. For example, "request_info_result"
+		 * becomes "puc_request_info_result-your_plugin_slug".
+		 *
+		 * @param string $tag
+		 * @param callable $callback
+		 * @param int $priority
+		 * @param int $acceptedArgs
+		 */
+		public function addFilter($tag, $callback, $priority = 10, $acceptedArgs = 1) {
+			add_filter($this->getUniqueName($tag), $callback, $priority, $acceptedArgs);
+		}
+
+		/* -------------------------------------------------------------------
+		 * Inject updates
+		 * -------------------------------------------------------------------
+		 */
+
+		/**
+		 * Insert the latest update (if any) into the update list maintained by WP.
+		 *
+		 * @param stdClass $updates Update list.
+		 * @return stdClass Modified update list.
+		 */
+		public function injectUpdate($updates) {
+			//Is there an update to insert?
+			$update = $this->getUpdate();
+
+			if ( !$this->shouldShowUpdates() ) {
+				$update = null;
+			}
+
+			if ( !empty($update) ) {
+				//Let plugins filter the update info before it's passed on to WordPress.
+				$update = apply_filters($this->getUniqueName('pre_inject_update'), $update);
+				$updates = $this->addUpdateToList($updates, $update->toWpFormat());
+			} else {
+				//Clean up any stale update info.
+				$updates = $this->removeUpdateFromList($updates);
+				//Add a placeholder item to the "no_update" list to enable auto-update support.
+				//If we don't do this, the option to enable automatic updates will only show up
+				//when an update is available.
+				$updates = $this->addNoUpdateItem($updates);
+			}
+
+			return $updates;
+		}
+
+		/**
+		 * @param stdClass|null $updates
+		 * @param stdClass|array $updateToAdd
+		 * @return stdClass
+		 */
+		protected function addUpdateToList($updates, $updateToAdd) {
+			if ( !is_object($updates) ) {
+				$updates = new stdClass();
+				$updates->response = array();
+			}
+
+			$updates->response[$this->getUpdateListKey()] = $updateToAdd;
+			return $updates;
+		}
+
+		/**
+		 * @param stdClass|null $updates
+		 * @return stdClass|null
+		 */
+		protected function removeUpdateFromList($updates) {
+			if ( isset($updates, $updates->response) ) {
+				unset($updates->response[$this->getUpdateListKey()]);
+			}
+			return $updates;
+		}
+
+		/**
+		 * See this post for more information:
+		 * @link https://make.wordpress.org/core/2020/07/30/recommended-usage-of-the-updates-api-to-support-the-auto-updates-ui-for-plugins-and-themes-in-wordpress-5-5/
+		 *
+		 * @param stdClass|null $updates
+		 * @return stdClass
+		 */
+		protected function addNoUpdateItem($updates) {
+			if ( !is_object($updates) ) {
+				$updates = new stdClass();
+				$updates->response = array();
+				$updates->no_update = array();
+			} else if ( !isset($updates->no_update) ) {
+				$updates->no_update = array();
+			}
+
+			$updates->no_update[$this->getUpdateListKey()] = (object) $this->getNoUpdateItemFields();
+
+			return $updates;
+		}
+
+		/**
+		 * Subclasses should override this method to add fields that are specific to plugins or themes.
+		 * @return array
+		 */
+		protected function getNoUpdateItemFields() {
+			return array(
+				'new_version'   => $this->getInstalledVersion(),
+				'url'           => '',
+				'package'       => '',
+				'requires_php'  => '',
+			);
+		}
+
+		/**
+		 * Get the key that will be used when adding updates to the update list that's maintained
+		 * by the WordPress core. The list is always an associative array, but the key is different
+		 * for plugins and themes.
+		 *
+		 * @return string
+		 */
+		abstract protected function getUpdateListKey();
+
+		/**
+		 * Should we show available updates?
+		 *
+		 * Usually the answer is "yes", but there are exceptions. For example, WordPress doesn't
+		 * support automatic updates installation for mu-plugins, so PUC usually won't show update
+		 * notifications in that case. See the plugin-specific subclass for details.
+		 *
+		 * Note: This method only applies to updates that are displayed (or not) in the WordPress
+		 * admin. It doesn't affect APIs like requestUpdate and getUpdate.
+		 *
+		 * @return bool
+		 */
+		protected function shouldShowUpdates() {
+			return true;
+		}
+
+		/* -------------------------------------------------------------------
+		 * JSON-based update API
+		 * -------------------------------------------------------------------
+		 */
+
+		/**
+		 * Retrieve plugin or theme metadata from the JSON document at $this->metadataUrl.
+		 *
+		 * @param string $metaClass Parse the JSON as an instance of this class. It must have a static fromJson method.
+		 * @param string $filterRoot
+		 * @param array $queryArgs Additional query arguments.
+		 * @return array [Puc_v4p13_Metadata|null, array|WP_Error] A metadata instance and the value returned by wp_remote_get().
+		 */
+		protected function requestMetadata($metaClass, $filterRoot, $queryArgs = array()) {
+			//Query args to append to the URL. Plugins can add their own by using a filter callback (see addQueryArgFilter()).
+			$queryArgs = array_merge(
+				array(
+					'installed_version' => strval($this->getInstalledVersion()),
+					'php' => phpversion(),
+					'locale' => get_locale(),
+				),
+				$queryArgs
+			);
+			$queryArgs = apply_filters($this->getUniqueName($filterRoot . '_query_args'), $queryArgs);
+
+			//Various options for the wp_remote_get() call. Plugins can filter these, too.
+			$options = array(
+				'timeout' => 10, //seconds
+				'headers' => array(
+					'Accept' => 'application/json',
+				),
+			);
+			$options = apply_filters($this->getUniqueName($filterRoot . '_options'), $options);
+
+			//The metadata file should be at 'http://your-api.com/url/here/$slug/info.json'
+			$url = $this->metadataUrl;
+			if ( !empty($queryArgs) ){
+				$url = add_query_arg($queryArgs, $url);
+			}
+
+			$result = wp_remote_get($url, $options);
+
+			$result = apply_filters($this->getUniqueName('request_metadata_http_result'), $result, $url, $options);
+			
+			//Try to parse the response
+			$status = $this->validateApiResponse($result);
+			$metadata = null;
+			if ( !is_wp_error($status) ){
+				if ( version_compare(PHP_VERSION, '5.3', '>=') && (strpos($metaClass, '\\') === false) ) {
+					$metaClass = __NAMESPACE__ . '\\' . $metaClass;
+				}
+				$metadata = call_user_func(array($metaClass, 'fromJson'), $result['body']);
+			} else {
+				do_action('puc_api_error', $status, $result, $url, $this->slug);
+				$this->triggerError(
+					sprintf('The URL %s does not point to a valid metadata file. ', $url)
+					. $status->get_error_message(),
+					E_USER_WARNING
+				);
+			}
+
+			return array($metadata, $result);
+		}
+
+		/**
+		 * Check if $result is a successful update API response.
+		 *
+		 * @param array|WP_Error $result
+		 * @return true|WP_Error
+		 */
+		protected function validateApiResponse($result) {
+			if ( is_wp_error($result) ) { /** @var WP_Error $result */
+				return new WP_Error($result->get_error_code(), 'WP HTTP Error: ' . $result->get_error_message());
+			}
+
+			if ( !isset($result['response']['code']) ) {
+				return new WP_Error(
+					'puc_no_response_code',
+					'wp_remote_get() returned an unexpected result.'
+				);
+			}
+
+			if ( $result['response']['code'] !== 200 ) {
+				return new WP_Error(
+					'puc_unexpected_response_code',
+					'HTTP response code is ' . $result['response']['code'] . ' (expected: 200)'
+				);
+			}
+
+			if ( empty($result['body']) ) {
+				return new WP_Error('puc_empty_response', 'The metadata file appears to be empty.');
+			}
+
+			return true;
+		}
+
+		/* -------------------------------------------------------------------
+		 * Language packs / Translation updates
+		 * -------------------------------------------------------------------
+		 */
+
+		/**
+		 * Filter a list of translation updates and return a new list that contains only updates
+		 * that apply to the current site.
+		 *
+		 * @param array $translations
+		 * @return array
+		 */
+		protected function filterApplicableTranslations($translations) {
+			$languages = array_flip(array_values(get_available_languages()));
+			$installedTranslations = $this->getInstalledTranslations();
+
+			$applicableTranslations = array();
+			foreach ($translations as $translation) {
+				//Does it match one of the available core languages?
+				$isApplicable = array_key_exists($translation->language, $languages);
+				//Is it more recent than an already-installed translation?
+				if ( isset($installedTranslations[$translation->language]) ) {
+					$updateTimestamp = strtotime($translation->updated);
+					$installedTimestamp = strtotime($installedTranslations[$translation->language]['PO-Revision-Date']);
+					$isApplicable = $updateTimestamp > $installedTimestamp;
+				}
+
+				if ( $isApplicable ) {
+					$applicableTranslations[] = $translation;
+				}
+			}
+
+			return $applicableTranslations;
+		}
+
+		/**
+		 * Get a list of installed translations for this plugin or theme.
+		 *
+		 * @return array
+		 */
+		protected function getInstalledTranslations() {
+			if ( !function_exists('wp_get_installed_translations') ) {
+				return array();
+			}
+			$installedTranslations = wp_get_installed_translations($this->translationType . 's');
+			if ( isset($installedTranslations[$this->directoryName]) ) {
+				$installedTranslations = $installedTranslations[$this->directoryName];
+			} else {
+				$installedTranslations = array();
+			}
+			return $installedTranslations;
+		}
+
+		/**
+		 * Insert translation updates into the list maintained by WordPress.
+		 *
+		 * @param stdClass $updates
+		 * @return stdClass
+		 */
+		public function injectTranslationUpdates($updates) {
+			$translationUpdates = $this->getTranslationUpdates();
+			if ( empty($translationUpdates) ) {
+				return $updates;
+			}
+
+			//Being defensive.
+			if ( !is_object($updates) ) {
+				$updates = new stdClass();
+			}
+			if ( !isset($updates->translations) ) {
+				$updates->translations = array();
+			}
+
+			//In case there's a name collision with a plugin or theme hosted on wordpress.org,
+			//remove any preexisting updates that match our thing.
+			$updates->translations = array_values(array_filter(
+				$updates->translations,
+				array($this, 'isNotMyTranslation')
+			));
+
+			//Add our updates to the list.
+			foreach($translationUpdates as $update) {
+				$convertedUpdate = array_merge(
+					array(
+						'type' => $this->translationType,
+						'slug' => $this->directoryName,
+						'autoupdate' => 0,
+						//AFAICT, WordPress doesn't actually use the "version" field for anything.
+						//But lets make sure it's there, just in case.
+						'version' => isset($update->version) ? $update->version : ('1.' . strtotime($update->updated)),
+					),
+					(array)$update
+				);
+
+				$updates->translations[] = $convertedUpdate;
+			}
+
+			return $updates;
+		}
+
+		/**
+		 * Get a list of available translation updates.
+		 *
+		 * This method will return an empty array if there are no updates.
+		 * Uses cached update data.
+		 *
+		 * @return array
+		 */
+		public function getTranslationUpdates() {
+			return $this->updateState->getTranslations();
+		}
+
+		/**
+		 * Remove all cached translation updates.
+		 *
+		 * @see wp_clean_update_cache
+		 */
+		public function clearCachedTranslationUpdates() {
+			$this->updateState->setTranslations(array());
+		}
+
+		/**
+		 * Filter callback. Keeps only translations that *don't* match this plugin or theme.
+		 *
+		 * @param array $translation
+		 * @return bool
+		 */
+		protected function isNotMyTranslation($translation) {
+			$isMatch = isset($translation['type'], $translation['slug'])
+				&& ($translation['type'] === $this->translationType)
+				&& ($translation['slug'] === $this->directoryName);
+
+			return !$isMatch;
+		}
+
+		/* -------------------------------------------------------------------
+		 * Fix directory name when installing updates
+		 * -------------------------------------------------------------------
+		 */
+
+		/**
+		 * Rename the update directory to match the existing plugin/theme directory.
+		 *
+		 * When WordPress installs a plugin or theme update, it assumes that the ZIP file will contain
+		 * exactly one directory, and that the directory name will be the same as the directory where
+		 * the plugin or theme is currently installed.
+		 *
+		 * GitHub and other repositories provide ZIP downloads, but they often use directory names like
+		 * "project-branch" or "project-tag-hash". We need to change the name to the actual plugin folder.
+		 *
+		 * This is a hook callback. Don't call it from a plugin.
+		 *
+		 * @access protected
+		 *
+		 * @param string $source The directory to copy to /wp-content/plugins or /wp-content/themes. Usually a subdirectory of $remoteSource.
+		 * @param string $remoteSource WordPress has extracted the update to this directory.
+		 * @param WP_Upgrader $upgrader
+		 * @return string|WP_Error
+		 */
+		public function fixDirectoryName($source, $remoteSource, $upgrader) {
+			global $wp_filesystem;
+			/** @var WP_Filesystem_Base $wp_filesystem */
+
+			//Basic sanity checks.
+			if ( !isset($source, $remoteSource, $upgrader, $upgrader->skin, $wp_filesystem) ) {
+				return $source;
+			}
+
+			//If WordPress is upgrading anything other than our plugin/theme, leave the directory name unchanged.
+			if ( !$this->isBeingUpgraded($upgrader) ) {
+				return $source;
+			}
+
+			//Rename the source to match the existing directory.
+			$correctedSource = trailingslashit($remoteSource) . $this->directoryName . '/';
+			if ( $source !== $correctedSource ) {
+				//The update archive should contain a single directory that contains the rest of plugin/theme files.
+				//Otherwise, WordPress will try to copy the entire working directory ($source == $remoteSource).
+				//We can't rename $remoteSource because that would break WordPress code that cleans up temporary files
+				//after update.
+				if ( $this->isBadDirectoryStructure($remoteSource) ) {
+					return new WP_Error(
+						'puc-incorrect-directory-structure',
+						sprintf(
+							'The directory structure of the update is incorrect. All files should be inside ' .
+							'a directory named <span class="code">%s</span>, not at the root of the ZIP archive.',
+							htmlentities($this->slug)
+						)
+					);
+				}
+
+				/** @var WP_Upgrader_Skin $upgrader ->skin */
+				$upgrader->skin->feedback(sprintf(
+					'Renaming %s to %s&#8230;',
+					'<span class="code">' . basename($source) . '</span>',
+					'<span class="code">' . $this->directoryName . '</span>'
+				));
+
+				if ( $wp_filesystem->move($source, $correctedSource, true) ) {
+					$upgrader->skin->feedback('Directory successfully renamed.');
+					return $correctedSource;
+				} else {
+					return new WP_Error(
+						'puc-rename-failed',
+						'Unable to rename the update to match the existing directory.'
+					);
+				}
+			}
+
+			return $source;
+		}
+
+		/**
+		 * Is there an update being installed right now, for this plugin or theme?
+		 *
+		 * @param WP_Upgrader|null $upgrader The upgrader that's performing the current update.
+		 * @return bool
+		 */
+		abstract public function isBeingUpgraded($upgrader = null);
+
+		/**
+		 * Check for incorrect update directory structure. An update must contain a single directory,
+		 * all other files should be inside that directory.
+		 *
+		 * @param string $remoteSource Directory path.
+		 * @return bool
+		 */
+		protected function isBadDirectoryStructure($remoteSource) {
+			global $wp_filesystem;
+			/** @var WP_Filesystem_Base $wp_filesystem */
+
+			$sourceFiles = $wp_filesystem->dirlist($remoteSource);
+			if ( is_array($sourceFiles) ) {
+				$sourceFiles = array_keys($sourceFiles);
+				$firstFilePath = trailingslashit($remoteSource) . $sourceFiles[0];
+				return (count($sourceFiles) > 1) || (!$wp_filesystem->is_dir($firstFilePath));
+			}
+
+			//Assume it's fine.
+			return false;
+		}
+
+		/* -------------------------------------------------------------------
+		 * DebugBar integration
+		 * -------------------------------------------------------------------
+		 */
+
+		/**
+		 * Initialize the update checker Debug Bar plugin/add-on thingy.
+		 */
+		public function maybeInitDebugBar() {
+			if ( class_exists('Debug_Bar', false) && file_exists(dirname(__FILE__) . '/DebugBar') ) {
+				$this->debugBarExtension = $this->createDebugBarExtension();
+			}
+		}
+
+		protected function createDebugBarExtension() {
+			return new Puc_v4p13_DebugBar_Extension($this);
+		}
+
+		/**
+		 * Display additional configuration details in the Debug Bar panel.
+		 *
+		 * @param Puc_v4p13_DebugBar_Panel $panel
+		 */
+		public function onDisplayConfiguration($panel) {
+			//Do nothing. Subclasses can use this to add additional info to the panel.
+		}
+
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/UpgraderStatus.php

@@ -0,0 +1,199 @@
+<?php
+if ( !class_exists('Puc_v4p13_UpgraderStatus', false) ):
+
+	/**
+	 * A utility class that helps figure out which plugin or theme WordPress is upgrading.
+	 *
+	 * It may seem strange to have a separate class just for that, but the task is surprisingly complicated.
+	 * Core classes like Plugin_Upgrader don't expose the plugin file name during an in-progress update (AFAICT).
+	 * This class uses a few workarounds and heuristics to get the file name.
+	 */
+	class Puc_v4p13_UpgraderStatus {
+		private $currentType = null; //"plugin" or "theme".
+		private $currentId = null;   //Plugin basename or theme directory name.
+
+		public function __construct() {
+			//Keep track of which plugin/theme WordPress is currently upgrading.
+			add_filter('upgrader_pre_install', array($this, 'setUpgradedThing'), 10, 2);
+			add_filter('upgrader_package_options', array($this, 'setUpgradedPluginFromOptions'), 10, 1);
+			add_filter('upgrader_post_install', array($this, 'clearUpgradedThing'), 10, 1);
+			add_action('upgrader_process_complete', array($this, 'clearUpgradedThing'), 10, 1);
+		}
+
+		/**
+		 * Is there and update being installed RIGHT NOW, for a specific plugin?
+		 *
+		 * Caution: This method is unreliable. WordPress doesn't make it easy to figure out what it is upgrading,
+		 * and upgrader implementations are liable to change without notice.
+		 *
+		 * @param string $pluginFile The plugin to check.
+		 * @param WP_Upgrader|null $upgrader The upgrader that's performing the current update.
+		 * @return bool True if the plugin identified by $pluginFile is being upgraded.
+		 */
+		public function isPluginBeingUpgraded($pluginFile, $upgrader = null) {
+			return $this->isBeingUpgraded('plugin', $pluginFile, $upgrader);
+		}
+
+		/**
+		 * Is there an update being installed for a specific theme?
+		 *
+		 * @param string $stylesheet Theme directory name.
+		 * @param WP_Upgrader|null $upgrader The upgrader that's performing the current update.
+		 * @return bool
+		 */
+		public function isThemeBeingUpgraded($stylesheet, $upgrader = null) {
+			return $this->isBeingUpgraded('theme', $stylesheet, $upgrader);
+		}
+
+		/**
+		 * Check if a specific theme or plugin is being upgraded.
+		 *
+		 * @param string $type
+		 * @param string $id
+		 * @param Plugin_Upgrader|WP_Upgrader|null $upgrader
+		 * @return bool
+		 */
+		protected function isBeingUpgraded($type, $id, $upgrader = null) {
+			if ( isset($upgrader) ) {
+				list($currentType, $currentId) = $this->getThingBeingUpgradedBy($upgrader);
+				if ( $currentType !== null ) {
+					$this->currentType = $currentType;
+					$this->currentId = $currentId;
+				}
+			}
+			return ($this->currentType === $type) && ($this->currentId === $id);
+		}
+
+		/**
+		 * Figure out which theme or plugin is being upgraded by a WP_Upgrader instance.
+		 *
+		 * Returns an array with two items. The first item is the type of the thing that's being
+		 * upgraded: "plugin" or "theme". The second item is either the plugin basename or
+		 * the theme directory name. If we can't determine what the upgrader is doing, both items
+		 * will be NULL.
+		 *
+		 * Examples:
+		 *      ['plugin', 'plugin-dir-name/plugin.php']
+		 *      ['theme', 'theme-dir-name']
+		 *
+		 * @param Plugin_Upgrader|WP_Upgrader $upgrader
+		 * @return array
+		 */
+		private function getThingBeingUpgradedBy($upgrader) {
+			if ( !isset($upgrader, $upgrader->skin) ) {
+				return array(null, null);
+			}
+
+			//Figure out which plugin or theme is being upgraded.
+			$pluginFile = null;
+			$themeDirectoryName = null;
+
+			$skin = $upgrader->skin;
+			if ( isset($skin->theme_info) && ($skin->theme_info instanceof WP_Theme) ) {
+				$themeDirectoryName = $skin->theme_info->get_stylesheet();
+			} elseif ( $skin instanceof Plugin_Upgrader_Skin ) {
+				if ( isset($skin->plugin) && is_string($skin->plugin) && ($skin->plugin !== '') ) {
+					$pluginFile = $skin->plugin;
+				}
+			} elseif ( $skin instanceof Theme_Upgrader_Skin ) {
+				if ( isset($skin->theme) && is_string($skin->theme) && ($skin->theme !== '') ) {
+					$themeDirectoryName = $skin->theme;
+				}
+			} elseif ( isset($skin->plugin_info) && is_array($skin->plugin_info) ) {
+				//This case is tricky because Bulk_Plugin_Upgrader_Skin (etc) doesn't actually store the plugin
+				//filename anywhere. Instead, it has the plugin headers in $plugin_info. So the best we can
+				//do is compare those headers to the headers of installed plugins.
+				$pluginFile = $this->identifyPluginByHeaders($skin->plugin_info);
+			}
+
+			if ( $pluginFile !== null ) {
+				return array('plugin', $pluginFile);
+			} elseif ( $themeDirectoryName !== null ) {
+				return array('theme', $themeDirectoryName);
+			}
+			return array(null, null);
+		}
+
+		/**
+		 * Identify an installed plugin based on its headers.
+		 *
+		 * @param array $searchHeaders The plugin file header to look for.
+		 * @return string|null Plugin basename ("foo/bar.php"), or NULL if we can't identify the plugin.
+		 */
+		private function identifyPluginByHeaders($searchHeaders) {
+			if ( !function_exists('get_plugins') ){
+				/** @noinspection PhpIncludeInspection */
+				require_once( ABSPATH . '/wp-admin/includes/plugin.php' );
+			}
+
+			$installedPlugins = get_plugins();
+			$matches = array();
+			foreach($installedPlugins as $pluginBasename => $headers) {
+				$diff1 = array_diff_assoc($headers, $searchHeaders);
+				$diff2 = array_diff_assoc($searchHeaders, $headers);
+				if ( empty($diff1) && empty($diff2) ) {
+					$matches[] = $pluginBasename;
+				}
+			}
+
+			//It's possible (though very unlikely) that there could be two plugins with identical
+			//headers. In that case, we can't unambiguously identify the plugin that's being upgraded.
+			if ( count($matches) !== 1 ) {
+				return null;
+			}
+
+			return reset($matches);
+		}
+
+		/**
+		 * @access private
+		 *
+		 * @param mixed $input
+		 * @param array $hookExtra
+		 * @return mixed Returns $input unaltered.
+		 */
+		public function setUpgradedThing($input, $hookExtra) {
+			if ( !empty($hookExtra['plugin']) && is_string($hookExtra['plugin']) ) {
+				$this->currentId = $hookExtra['plugin'];
+				$this->currentType = 'plugin';
+			} elseif ( !empty($hookExtra['theme']) && is_string($hookExtra['theme']) ) {
+				$this->currentId = $hookExtra['theme'];
+				$this->currentType = 'theme';
+			} else {
+				$this->currentType = null;
+				$this->currentId = null;
+			}
+			return $input;
+		}
+
+		/**
+		 * @access private
+		 *
+		 * @param array $options
+		 * @return array
+		 */
+		public function setUpgradedPluginFromOptions($options) {
+			if ( isset($options['hook_extra']['plugin']) && is_string($options['hook_extra']['plugin']) ) {
+				$this->currentType = 'plugin';
+				$this->currentId = $options['hook_extra']['plugin'];
+			} else {
+				$this->currentType = null;
+				$this->currentId = null;
+			}
+			return $options;
+		}
+
+		/**
+		 * @access private
+		 *
+		 * @param mixed $input
+		 * @return mixed Returns $input unaltered.
+		 */
+		public function clearUpgradedThing($input = null) {
+			$this->currentId = null;
+			$this->currentType = null;
+			return $input;
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/Utils.php

@@ -0,0 +1,69 @@
+<?php
+
+if ( !class_exists('Puc_v4p13_Utils', false) ):
+
+	class Puc_v4p13_Utils {
+		/**
+		 * Get a value from a nested array or object based on a path.
+		 *
+		 * @param array|object|null $collection Get an entry from this array.
+		 * @param array|string $path A list of array keys in hierarchy order, or a string path like "foo.bar.baz".
+		 * @param mixed $default The value to return if the specified path is not found.
+		 * @param string $separator Path element separator. Only applies to string paths.
+		 * @return mixed
+		 */
+		public static function get($collection, $path, $default = null, $separator = '.') {
+			if ( is_string($path) ) {
+				$path = explode($separator, $path);
+			}
+
+			//Follow the $path into $input as far as possible.
+			$currentValue = $collection;
+			foreach ($path as $node) {
+				if ( is_array($currentValue) && isset($currentValue[$node]) ) {
+					$currentValue = $currentValue[$node];
+				} else if ( is_object($currentValue) && isset($currentValue->$node) ) {
+					$currentValue = $currentValue->$node;
+				} else {
+					return $default;
+				}
+			}
+
+			return $currentValue;
+		}
+
+		/**
+		 * Get the first array element that is not empty.
+		 *
+		 * @param array $values
+		 * @param mixed|null $default Returns this value if there are no non-empty elements.
+		 * @return mixed|null
+		 */
+		public static function findNotEmpty($values, $default = null) {
+			if ( empty($values) ) {
+				return $default;
+			}
+
+			foreach ($values as $value) {
+				if ( !empty($value) ) {
+					return $value;
+				}
+			}
+
+			return $default;
+		}
+
+		/**
+		 * Check if the input string starts with the specified prefix.
+		 *
+		 * @param string $input
+		 * @param string $prefix
+		 * @return bool
+		 */
+		public static function startsWith($input, $prefix) {
+			$length = strlen($prefix);
+			return (substr($input, 0, $length) === $prefix);
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/Vcs/Api.php

@@ -0,0 +1,302 @@
+<?php
+if ( !class_exists('Puc_v4p13_Vcs_Api') ):
+
+	abstract class Puc_v4p13_Vcs_Api {
+		protected $tagNameProperty = 'name';
+		protected $slug = '';
+
+		/**
+		 * @var string
+		 */
+		protected $repositoryUrl = '';
+
+		/**
+		 * @var mixed Authentication details for private repositories. Format depends on service.
+		 */
+		protected $credentials = null;
+
+		/**
+		 * @var string The filter tag that's used to filter options passed to wp_remote_get.
+		 * For example, "puc_request_info_options-slug" or "puc_request_update_options_theme-slug".
+		 */
+		protected $httpFilterName = '';
+
+		/**
+		 * @var string|null
+		 */
+		protected $localDirectory = null;
+
+		/**
+		 * Puc_v4p13_Vcs_Api constructor.
+		 *
+		 * @param string $repositoryUrl
+		 * @param array|string|null $credentials
+		 */
+		public function __construct($repositoryUrl, $credentials = null) {
+			$this->repositoryUrl = $repositoryUrl;
+			$this->setAuthentication($credentials);
+		}
+
+		/**
+		 * @return string
+		 */
+		public function getRepositoryUrl() {
+			return $this->repositoryUrl;
+		}
+
+		/**
+		 * Figure out which reference (i.e tag or branch) contains the latest version.
+		 *
+		 * @param string $configBranch Start looking in this branch.
+		 * @return null|Puc_v4p13_Vcs_Reference
+		 */
+		abstract public function chooseReference($configBranch);
+
+		/**
+		 * Get the readme.txt file from the remote repository and parse it
+		 * according to the plugin readme standard.
+		 *
+		 * @param string $ref Tag or branch name.
+		 * @return array Parsed readme.
+		 */
+		public function getRemoteReadme($ref = 'master') {
+			$fileContents = $this->getRemoteFile($this->getLocalReadmeName(), $ref);
+			if ( empty($fileContents) ) {
+				return array();
+			}
+
+			$parser = new PucReadmeParser();
+			return $parser->parse_readme_contents($fileContents);
+		}
+
+		/**
+		 * Get the case-sensitive name of the local readme.txt file.
+		 *
+		 * In most cases it should just be called "readme.txt", but some plugins call it "README.txt",
+		 * "README.TXT", or even "Readme.txt". Most VCS are case-sensitive so we need to know the correct
+		 * capitalization.
+		 *
+		 * Defaults to "readme.txt" (all lowercase).
+		 *
+		 * @return string
+		 */
+		public function getLocalReadmeName() {
+			static $fileName = null;
+			if ( $fileName !== null ) {
+				return $fileName;
+			}
+
+			$fileName = 'readme.txt';
+			if ( isset($this->localDirectory) ) {
+				$files = scandir($this->localDirectory);
+				if ( !empty($files) ) {
+					foreach ($files as $possibleFileName) {
+						if ( strcasecmp($possibleFileName, 'readme.txt') === 0 ) {
+							$fileName = $possibleFileName;
+							break;
+						}
+					}
+				}
+			}
+			return $fileName;
+		}
+
+		/**
+		 * Get a branch.
+		 *
+		 * @param string $branchName
+		 * @return Puc_v4p13_Vcs_Reference|null
+		 */
+		abstract public function getBranch($branchName);
+
+		/**
+		 * Get a specific tag.
+		 *
+		 * @param string $tagName
+		 * @return Puc_v4p13_Vcs_Reference|null
+		 */
+		abstract public function getTag($tagName);
+
+		/**
+		 * Get the tag that looks like the highest version number.
+		 * (Implementations should skip pre-release versions if possible.)
+		 *
+		 * @return Puc_v4p13_Vcs_Reference|null
+		 */
+		abstract public function getLatestTag();
+
+		/**
+		 * Check if a tag name string looks like a version number.
+		 *
+		 * @param string $name
+		 * @return bool
+		 */
+		protected function looksLikeVersion($name) {
+			//Tag names may be prefixed with "v", e.g. "v1.2.3".
+			$name = ltrim($name, 'v');
+
+			//The version string must start with a number.
+			if ( !is_numeric(substr($name, 0, 1)) ) {
+				return false;
+			}
+
+			//The goal is to accept any SemVer-compatible or "PHP-standardized" version number.
+			return (preg_match('@^(\d{1,5}?)(\.\d{1,10}?){0,4}?($|[abrdp+_\-]|\s)@i', $name) === 1);
+		}
+
+		/**
+		 * Check if a tag appears to be named like a version number.
+		 *
+		 * @param stdClass $tag
+		 * @return bool
+		 */
+		protected function isVersionTag($tag) {
+			$property = $this->tagNameProperty;
+			return isset($tag->$property) && $this->looksLikeVersion($tag->$property);
+		}
+
+		/**
+		 * Sort a list of tags as if they were version numbers.
+		 * Tags that don't look like version number will be removed.
+		 *
+		 * @param stdClass[] $tags Array of tag objects.
+		 * @return stdClass[] Filtered array of tags sorted in descending order.
+		 */
+		protected function sortTagsByVersion($tags) {
+			//Keep only those tags that look like version numbers.
+			$versionTags = array_filter($tags, array($this, 'isVersionTag'));
+			//Sort them in descending order.
+			usort($versionTags, array($this, 'compareTagNames'));
+
+			return $versionTags;
+		}
+
+		/**
+		 * Compare two tags as if they were version number.
+		 *
+		 * @param stdClass $tag1 Tag object.
+		 * @param stdClass $tag2 Another tag object.
+		 * @return int
+		 */
+		protected function compareTagNames($tag1, $tag2) {
+			$property = $this->tagNameProperty;
+			if ( !isset($tag1->$property) ) {
+				return 1;
+			}
+			if ( !isset($tag2->$property) ) {
+				return -1;
+			}
+			return -version_compare(ltrim($tag1->$property, 'v'), ltrim($tag2->$property, 'v'));
+		}
+
+		/**
+		 * Get the contents of a file from a specific branch or tag.
+		 *
+		 * @param string $path File name.
+		 * @param string $ref
+		 * @return null|string Either the contents of the file, or null if the file doesn't exist or there's an error.
+		 */
+		abstract public function getRemoteFile($path, $ref = 'master');
+
+		/**
+		 * Get the timestamp of the latest commit that changed the specified branch or tag.
+		 *
+		 * @param string $ref Reference name (e.g. branch or tag).
+		 * @return string|null
+		 */
+		abstract public function getLatestCommitTime($ref);
+
+		/**
+		 * Get the contents of the changelog file from the repository.
+		 *
+		 * @param string $ref
+		 * @param string $localDirectory Full path to the local plugin or theme directory.
+		 * @return null|string The HTML contents of the changelog.
+		 */
+		public function getRemoteChangelog($ref, $localDirectory) {
+			$filename = $this->findChangelogName($localDirectory);
+			if ( empty($filename) ) {
+				return null;
+			}
+
+			$changelog = $this->getRemoteFile($filename, $ref);
+			if ( $changelog === null ) {
+				return null;
+			}
+
+			/** @noinspection PhpUndefinedClassInspection */
+			return Parsedown::instance()->text($changelog);
+		}
+
+		/**
+		 * Guess the name of the changelog file.
+		 *
+		 * @param string $directory
+		 * @return string|null
+		 */
+		protected function findChangelogName($directory = null) {
+			if ( !isset($directory) ) {
+				$directory = $this->localDirectory;
+			}
+			if ( empty($directory) || !is_dir($directory) || ($directory === '.') ) {
+				return null;
+			}
+
+			$possibleNames = array('CHANGES.md', 'CHANGELOG.md', 'changes.md', 'changelog.md');
+			$files = scandir($directory);
+			$foundNames = array_intersect($possibleNames, $files);
+
+			if ( !empty($foundNames) ) {
+				return reset($foundNames);
+			}
+			return null;
+		}
+
+		/**
+		 * Set authentication credentials.
+		 *
+		 * @param $credentials
+		 */
+		public function setAuthentication($credentials) {
+			$this->credentials = $credentials;
+		}
+
+		public function isAuthenticationEnabled() {
+			return !empty($this->credentials);
+		}
+
+		/**
+		 * @param string $url
+		 * @return string
+		 */
+		public function signDownloadUrl($url) {
+			return $url;
+		}
+
+		/**
+		 * @param string $filterName
+		 */
+		public function setHttpFilterName($filterName) {
+			$this->httpFilterName = $filterName;
+		}
+
+		/**
+		 * @param string $directory
+		 */
+		public function setLocalDirectory($directory) {
+			if ( empty($directory) || !is_dir($directory) || ($directory === '.') ) {
+				$this->localDirectory = null;
+			} else {
+				$this->localDirectory = $directory;
+			}
+		}
+
+		/**
+		 * @param string $slug
+		 */
+		public function setSlug($slug) {
+			$this->slug = $slug;
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/Vcs/BaseChecker.php

@@ -0,0 +1,27 @@
+<?php
+if ( !interface_exists('Puc_v4p13_Vcs_BaseChecker', false) ):
+
+	interface Puc_v4p13_Vcs_BaseChecker {
+		/**
+		 * Set the repository branch to use for updates. Defaults to 'master'.
+		 *
+		 * @param string $branch
+		 * @return $this
+		 */
+		public function setBranch($branch);
+
+		/**
+		 * Set authentication credentials.
+		 *
+		 * @param array|string $credentials
+		 * @return $this
+		 */
+		public function setAuthentication($credentials);
+
+		/**
+		 * @return Puc_v4p13_Vcs_Api
+		 */
+		public function getVcsApi();
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/Vcs/BitBucketApi.php

@@ -0,0 +1,273 @@
+<?php
+if ( !class_exists('Puc_v4p13_Vcs_BitBucketApi', false) ):
+
+	class Puc_v4p13_Vcs_BitBucketApi extends Puc_v4p13_Vcs_Api {
+		/**
+		 * @var Puc_v4p13_OAuthSignature
+		 */
+		private $oauth = null;
+
+		/**
+		 * @var string
+		 */
+		private $username;
+
+		/**
+		 * @var string
+		 */
+		private $repository;
+
+		public function __construct($repositoryUrl, $credentials = array()) {
+			$path = parse_url($repositoryUrl, PHP_URL_PATH);
+			if ( preg_match('@^/?(?P<username>[^/]+?)/(?P<repository>[^/#?&]+?)/?$@', $path, $matches) ) {
+				$this->username = $matches['username'];
+				$this->repository = $matches['repository'];
+			} else {
+				throw new InvalidArgumentException('Invalid BitBucket repository URL: "' . $repositoryUrl . '"');
+			}
+
+			parent::__construct($repositoryUrl, $credentials);
+		}
+
+		/**
+		 * Figure out which reference (i.e tag or branch) contains the latest version.
+		 *
+		 * @param string $configBranch Start looking in this branch.
+		 * @return null|Puc_v4p13_Vcs_Reference
+		 */
+		public function chooseReference($configBranch) {
+			$updateSource = null;
+
+			//Check if there's a "Stable tag: 1.2.3" header that points to a valid tag.
+			$updateSource = $this->getStableTag($configBranch);
+
+			//Look for version-like tags.
+			if ( !$updateSource && ($configBranch === 'master' || $configBranch === 'main') ) {
+				$updateSource = $this->getLatestTag();
+			}
+			//If all else fails, use the specified branch itself.
+			if ( !$updateSource ) {
+				$updateSource = $this->getBranch($configBranch);
+			}
+
+			return $updateSource;
+		}
+
+		public function getBranch($branchName) {
+			$branch = $this->api('/refs/branches/' . $branchName);
+			if ( is_wp_error($branch) || empty($branch) ) {
+				return null;
+			}
+
+			//The "/src/{stuff}/{path}" endpoint doesn't seem to handle branch names that contain slashes.
+			//If we don't encode the slash, we get a 404. If we encode it as "%2F", we get a 401.
+			//To avoid issues, if the branch name is not URL-safe, let's use the commit hash instead.
+			$ref = $branch->name;
+			if ((urlencode($ref) !== $ref) && isset($branch->target->hash)) {
+				$ref = $branch->target->hash;
+			}
+
+			return new Puc_v4p13_Vcs_Reference(array(
+				'name' => $ref,
+				'updated' => $branch->target->date,
+				'downloadUrl' => $this->getDownloadUrl($branch->name),
+			));
+		}
+
+		/**
+		 * Get a specific tag.
+		 *
+		 * @param string $tagName
+		 * @return Puc_v4p13_Vcs_Reference|null
+		 */
+		public function getTag($tagName) {
+			$tag = $this->api('/refs/tags/' . $tagName);
+			if ( is_wp_error($tag) || empty($tag) ) {
+				return null;
+			}
+
+			return new Puc_v4p13_Vcs_Reference(array(
+				'name' => $tag->name,
+				'version' => ltrim($tag->name, 'v'),
+				'updated' => $tag->target->date,
+				'downloadUrl' => $this->getDownloadUrl($tag->name),
+			));
+		}
+
+		/**
+		 * Get the tag that looks like the highest version number.
+		 *
+		 * @return Puc_v4p13_Vcs_Reference|null
+		 */
+		public function getLatestTag() {
+			$tags = $this->api('/refs/tags?sort=-target.date');
+			if ( !isset($tags, $tags->values) || !is_array($tags->values) ) {
+				return null;
+			}
+
+			//Filter and sort the list of tags.
+			$versionTags = $this->sortTagsByVersion($tags->values);
+
+			//Return the first result.
+			if ( !empty($versionTags) ) {
+				$tag = $versionTags[0];
+				return new Puc_v4p13_Vcs_Reference(array(
+					'name' => $tag->name,
+					'version' => ltrim($tag->name, 'v'),
+					'updated' => $tag->target->date,
+					'downloadUrl' => $this->getDownloadUrl($tag->name),
+				));
+			}
+			return null;
+		}
+
+		/**
+		 * Get the tag/ref specified by the "Stable tag" header in the readme.txt of a given branch.
+		 *
+		 * @param string $branch
+		 * @return null|Puc_v4p13_Vcs_Reference
+		 */
+		protected function getStableTag($branch) {
+			$remoteReadme = $this->getRemoteReadme($branch);
+			if ( !empty($remoteReadme['stable_tag']) ) {
+				$tag = $remoteReadme['stable_tag'];
+
+				//You can explicitly opt out of using tags by setting "Stable tag" to
+				//"trunk" or the name of the current branch.
+				if ( ($tag === $branch) || ($tag === 'trunk') ) {
+					return $this->getBranch($branch);
+				}
+
+				return $this->getTag($tag);
+			}
+
+			return null;
+		}
+
+		/**
+		 * @param string $ref
+		 * @return string
+		 */
+		protected function getDownloadUrl($ref) {
+			return sprintf(
+				'https://bitbucket.org/%s/%s/get/%s.zip',
+				$this->username,
+				$this->repository,
+				$ref
+			);
+		}
+
+		/**
+		 * Get the contents of a file from a specific branch or tag.
+		 *
+		 * @param string $path File name.
+		 * @param string $ref
+		 * @return null|string Either the contents of the file, or null if the file doesn't exist or there's an error.
+		 */
+		public function getRemoteFile($path, $ref = 'master') {
+			$response = $this->api('src/' . $ref . '/' . ltrim($path));
+			if ( is_wp_error($response) || !is_string($response) ) {
+				return null;
+			}
+			return $response;
+		}
+
+		/**
+		 * Get the timestamp of the latest commit that changed the specified branch or tag.
+		 *
+		 * @param string $ref Reference name (e.g. branch or tag).
+		 * @return string|null
+		 */
+		public function getLatestCommitTime($ref) {
+			$response = $this->api('commits/' . $ref);
+			if ( isset($response->values, $response->values[0], $response->values[0]->date) ) {
+				return $response->values[0]->date;
+			}
+			return null;
+		}
+
+		/**
+		 * Perform a BitBucket API 2.0 request.
+		 *
+		 * @param string $url
+		 * @param string $version
+		 * @return mixed|WP_Error
+		 */
+		public function api($url, $version = '2.0') {
+			$url = ltrim($url, '/');
+			$isSrcResource = Puc_v4p13_Utils::startsWith($url, 'src/');
+
+			$url = implode('/', array(
+				'https://api.bitbucket.org',
+				$version,
+				'repositories',
+				$this->username,
+				$this->repository,
+				$url
+			));
+			$baseUrl = $url;
+
+			if ( $this->oauth ) {
+				$url = $this->oauth->sign($url,'GET');
+			}
+
+			$options = array('timeout' => 10);
+			if ( !empty($this->httpFilterName) ) {
+				$options = apply_filters($this->httpFilterName, $options);
+			}
+			$response = wp_remote_get($url, $options);
+			if ( is_wp_error($response) ) {
+				do_action('puc_api_error', $response, null, $url, $this->slug);
+				return $response;
+			}
+
+			$code = wp_remote_retrieve_response_code($response);
+			$body = wp_remote_retrieve_body($response);
+			if ( $code === 200 ) {
+				if ( $isSrcResource ) {
+					//Most responses are JSON-encoded, but src resources just
+					//return raw file contents.
+					$document = $body;
+				} else {
+					$document = json_decode($body);
+				}
+				return $document;
+			}
+
+			$error = new WP_Error(
+				'puc-bitbucket-http-error',
+				sprintf('BitBucket API error. Base URL: "%s",  HTTP status code: %d.', $baseUrl, $code)
+			);
+			do_action('puc_api_error', $error, $response, $url, $this->slug);
+
+			return $error;
+		}
+
+		/**
+		 * @param array $credentials
+		 */
+		public function setAuthentication($credentials) {
+			parent::setAuthentication($credentials);
+
+			if ( !empty($credentials) && !empty($credentials['consumer_key']) ) {
+				$this->oauth = new Puc_v4p13_OAuthSignature(
+					$credentials['consumer_key'],
+					$credentials['consumer_secret']
+				);
+			} else {
+				$this->oauth = null;
+			}
+		}
+
+		public function signDownloadUrl($url) {
+			//Add authentication data to download URLs. Since OAuth signatures incorporate
+			//timestamps, we have to do this immediately before inserting the update. Otherwise
+			//authentication could fail due to a stale timestamp.
+			if ( $this->oauth ) {
+				$url = $this->oauth->sign($url);
+			}
+			return $url;
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/Vcs/GitHubApi.php

@@ -0,0 +1,441 @@
+<?php
+
+if ( !class_exists('Puc_v4p13_Vcs_GitHubApi', false) ):
+
+	class Puc_v4p13_Vcs_GitHubApi extends Puc_v4p13_Vcs_Api {
+		/**
+		 * @var string GitHub username.
+		 */
+		protected $userName;
+		/**
+		 * @var string GitHub repository name.
+		 */
+		protected $repositoryName;
+
+		/**
+		 * @var string Either a fully qualified repository URL, or just "user/repo-name".
+		 */
+		protected $repositoryUrl;
+
+		/**
+		 * @var string GitHub authentication token. Optional.
+		 */
+		protected $accessToken;
+
+		/**
+		 * @var bool Whether to download release assets instead of the auto-generated source code archives.
+		 */
+		protected $releaseAssetsEnabled = false;
+
+		/**
+		 * @var string|null Regular expression that's used to filter release assets by name. Optional.
+		 */
+		protected $assetFilterRegex = null;
+
+		/**
+		 * @var string|null The unchanging part of a release asset URL. Used to identify download attempts.
+		 */
+		protected $assetApiBaseUrl = null;
+
+		/**
+		 * @var bool
+		 */
+		private $downloadFilterAdded = false;
+
+		public function __construct($repositoryUrl, $accessToken = null) {
+			$path = parse_url($repositoryUrl, PHP_URL_PATH);
+			if ( preg_match('@^/?(?P<username>[^/]+?)/(?P<repository>[^/#?&]+?)/?$@', $path, $matches) ) {
+				$this->userName = $matches['username'];
+				$this->repositoryName = $matches['repository'];
+			} else {
+				throw new InvalidArgumentException('Invalid GitHub repository URL: "' . $repositoryUrl . '"');
+			}
+
+			parent::__construct($repositoryUrl, $accessToken);
+		}
+
+		/**
+		 * Get the latest release from GitHub.
+		 *
+		 * @return Puc_v4p13_Vcs_Reference|null
+		 */
+		public function getLatestRelease() {
+			$release = $this->api('/repos/:user/:repo/releases/latest');
+			if ( is_wp_error($release) || !is_object($release) || !isset($release->tag_name) ) {
+				return null;
+			}
+
+			$reference = new Puc_v4p13_Vcs_Reference(array(
+				'name'        => $release->tag_name,
+				'version'     => ltrim($release->tag_name, 'v'), //Remove the "v" prefix from "v1.2.3".
+				'downloadUrl' => $release->zipball_url,
+				'updated'     => $release->created_at,
+				'apiResponse' => $release,
+			));
+
+			if ( isset($release->assets[0]) ) {
+				$reference->downloadCount = $release->assets[0]->download_count;
+			}
+
+			if ( $this->releaseAssetsEnabled && isset($release->assets, $release->assets[0]) ) {
+				//Use the first release asset that matches the specified regular expression.
+				$matchingAssets = array_filter($release->assets, array($this, 'matchesAssetFilter'));
+				if ( !empty($matchingAssets) ) {
+					if ( $this->isAuthenticationEnabled() ) {
+						/**
+						 * Keep in mind that we'll need to add an "Accept" header to download this asset.
+						 *
+						 * @see setUpdateDownloadHeaders()
+						 */
+						$reference->downloadUrl = $matchingAssets[0]->url;
+					} else {
+						//It seems that browser_download_url only works for public repositories.
+						//Using an access_token doesn't help. Maybe OAuth would work?
+						$reference->downloadUrl = $matchingAssets[0]->browser_download_url;
+					}
+
+					$reference->downloadCount = $matchingAssets[0]->download_count;
+				}
+			}
+
+			if ( !empty($release->body) ) {
+				/** @noinspection PhpUndefinedClassInspection */
+				$reference->changelog = Parsedown::instance()->text($release->body);
+			}
+
+			return $reference;
+		}
+
+		/**
+		 * Get the tag that looks like the highest version number.
+		 *
+		 * @return Puc_v4p13_Vcs_Reference|null
+		 */
+		public function getLatestTag() {
+			$tags = $this->api('/repos/:user/:repo/tags');
+
+			if ( is_wp_error($tags) || !is_array($tags) ) {
+				return null;
+			}
+
+			$versionTags = $this->sortTagsByVersion($tags);
+			if ( empty($versionTags) ) {
+				return null;
+			}
+
+			$tag = $versionTags[0];
+			return new Puc_v4p13_Vcs_Reference(array(
+				'name'        => $tag->name,
+				'version'     => ltrim($tag->name, 'v'),
+				'downloadUrl' => $tag->zipball_url,
+				'apiResponse' => $tag,
+			));
+		}
+
+		/**
+		 * Get a branch by name.
+		 *
+		 * @param string $branchName
+		 * @return null|Puc_v4p13_Vcs_Reference
+		 */
+		public function getBranch($branchName) {
+			$branch = $this->api('/repos/:user/:repo/branches/' . $branchName);
+			if ( is_wp_error($branch) || empty($branch) ) {
+				return null;
+			}
+
+			$reference = new Puc_v4p13_Vcs_Reference(array(
+				'name'        => $branch->name,
+				'downloadUrl' => $this->buildArchiveDownloadUrl($branch->name),
+				'apiResponse' => $branch,
+			));
+
+			if ( isset($branch->commit, $branch->commit->commit, $branch->commit->commit->author->date) ) {
+				$reference->updated = $branch->commit->commit->author->date;
+			}
+
+			return $reference;
+		}
+
+		/**
+		 * Get the latest commit that changed the specified file.
+		 *
+		 * @param string $filename
+		 * @param string $ref Reference name (e.g. branch or tag).
+		 * @return StdClass|null
+		 */
+		public function getLatestCommit($filename, $ref = 'master') {
+			$commits = $this->api(
+				'/repos/:user/:repo/commits',
+				array(
+					'path' => $filename,
+					'sha'  => $ref,
+				)
+			);
+			if ( !is_wp_error($commits) && isset($commits[0]) ) {
+				return $commits[0];
+			}
+			return null;
+		}
+
+		/**
+		 * Get the timestamp of the latest commit that changed the specified branch or tag.
+		 *
+		 * @param string $ref Reference name (e.g. branch or tag).
+		 * @return string|null
+		 */
+		public function getLatestCommitTime($ref) {
+			$commits = $this->api('/repos/:user/:repo/commits', array('sha' => $ref));
+			if ( !is_wp_error($commits) && isset($commits[0]) ) {
+				return $commits[0]->commit->author->date;
+			}
+			return null;
+		}
+
+		/**
+		 * Perform a GitHub API request.
+		 *
+		 * @param string $url
+		 * @param array $queryParams
+		 * @return mixed|WP_Error
+		 */
+		protected function api($url, $queryParams = array()) {
+			$baseUrl = $url;
+			$url = $this->buildApiUrl($url, $queryParams);
+
+			$options = array('timeout' => 10);
+			if ( $this->isAuthenticationEnabled() ) {
+				$options['headers'] = array('Authorization' => $this->getAuthorizationHeader());
+			}
+
+			if ( !empty($this->httpFilterName) ) {
+				$options = apply_filters($this->httpFilterName, $options);
+			}
+			$response = wp_remote_get($url, $options);
+			if ( is_wp_error($response) ) {
+				do_action('puc_api_error', $response, null, $url, $this->slug);
+				return $response;
+			}
+
+			$code = wp_remote_retrieve_response_code($response);
+			$body = wp_remote_retrieve_body($response);
+			if ( $code === 200 ) {
+				$document = json_decode($body);
+				return $document;
+			}
+
+			$error = new WP_Error(
+				'puc-github-http-error',
+				sprintf('GitHub API error. Base URL: "%s",  HTTP status code: %d.', $baseUrl, $code)
+			);
+			do_action('puc_api_error', $error, $response, $url, $this->slug);
+
+			return $error;
+		}
+
+		/**
+		 * Build a fully qualified URL for an API request.
+		 *
+		 * @param string $url
+		 * @param array $queryParams
+		 * @return string
+		 */
+		protected function buildApiUrl($url, $queryParams) {
+			$variables = array(
+				'user' => $this->userName,
+				'repo' => $this->repositoryName,
+			);
+			foreach ($variables as $name => $value) {
+				$url = str_replace('/:' . $name, '/' . urlencode($value), $url);
+			}
+			$url = 'https://api.github.com' . $url;
+
+			if ( !empty($queryParams) ) {
+				$url = add_query_arg($queryParams, $url);
+			}
+
+			return $url;
+		}
+
+		/**
+		 * Get the contents of a file from a specific branch or tag.
+		 *
+		 * @param string $path File name.
+		 * @param string $ref
+		 * @return null|string Either the contents of the file, or null if the file doesn't exist or there's an error.
+		 */
+		public function getRemoteFile($path, $ref = 'master') {
+			$apiUrl = '/repos/:user/:repo/contents/' . $path;
+			$response = $this->api($apiUrl, array('ref' => $ref));
+
+			if ( is_wp_error($response) || !isset($response->content) || ($response->encoding !== 'base64') ) {
+				return null;
+			}
+			return base64_decode($response->content);
+		}
+
+		/**
+		 * Generate a URL to download a ZIP archive of the specified branch/tag/etc.
+		 *
+		 * @param string $ref
+		 * @return string
+		 */
+		public function buildArchiveDownloadUrl($ref = 'master') {
+			$url = sprintf(
+				'https://api.github.com/repos/%1$s/%2$s/zipball/%3$s',
+				urlencode($this->userName),
+				urlencode($this->repositoryName),
+				urlencode($ref)
+			);
+			return $url;
+		}
+
+		/**
+		 * Get a specific tag.
+		 *
+		 * @param string $tagName
+		 * @return void
+		 */
+		public function getTag($tagName) {
+			//The current GitHub update checker doesn't use getTag, so I didn't bother to implement it.
+			throw new LogicException('The ' . __METHOD__ . ' method is not implemented and should not be used.');
+		}
+
+		public function setAuthentication($credentials) {
+			parent::setAuthentication($credentials);
+			$this->accessToken = is_string($credentials) ? $credentials : null;
+
+			//Optimization: Instead of filtering all HTTP requests, let's do it only when
+			//WordPress is about to download an update.
+			add_filter('upgrader_pre_download', array($this, 'addHttpRequestFilter'), 10, 1); //WP 3.7+
+		}
+
+		/**
+		 * Figure out which reference (i.e tag or branch) contains the latest version.
+		 *
+		 * @param string $configBranch Start looking in this branch.
+		 * @return null|Puc_v4p13_Vcs_Reference
+		 */
+		public function chooseReference($configBranch) {
+			$updateSource = null;
+
+			if ( $configBranch === 'master' ) {
+				//Use the latest release.
+				$updateSource = $this->getLatestRelease();
+				if ( $updateSource === null ) {
+					//Failing that, use the tag with the highest version number.
+					$updateSource = $this->getLatestTag();
+				}
+			}
+			//Alternatively, just use the branch itself.
+			if ( empty($updateSource) ) {
+				$updateSource = $this->getBranch($configBranch);
+			}
+
+			return $updateSource;
+		}
+
+		/**
+		 * Enable updating via release assets.
+		 *
+		 * If the latest release contains no usable assets, the update checker
+		 * will fall back to using the automatically generated ZIP archive.
+		 *
+		 * Private repositories will only work with WordPress 3.7 or later.
+		 *
+		 * @param string|null $fileNameRegex Optional. Use only those assets where the file name matches this regex.
+		 */
+		public function enableReleaseAssets($fileNameRegex = null) {
+			$this->releaseAssetsEnabled = true;
+			$this->assetFilterRegex = $fileNameRegex;
+			$this->assetApiBaseUrl = sprintf(
+				'//api.github.com/repos/%1$s/%2$s/releases/assets/',
+				$this->userName,
+				$this->repositoryName
+			);
+		}
+
+		/**
+		 * Does this asset match the file name regex?
+		 *
+		 * @param stdClass $releaseAsset
+		 * @return bool
+		 */
+		protected function matchesAssetFilter($releaseAsset) {
+			if ( $this->assetFilterRegex === null ) {
+				//The default is to accept all assets.
+				return true;
+			}
+			return isset($releaseAsset->name) && preg_match($this->assetFilterRegex, $releaseAsset->name);
+		}
+
+		/**
+		 * @internal
+		 * @param bool $result
+		 * @return bool
+		 */
+		public function addHttpRequestFilter($result) {
+			if ( !$this->downloadFilterAdded && $this->isAuthenticationEnabled() ) {
+				add_filter('http_request_args', array($this, 'setUpdateDownloadHeaders'), 10, 2);
+				add_action('requests-requests.before_redirect', array($this, 'removeAuthHeaderFromRedirects'), 10, 4);
+				$this->downloadFilterAdded = true;
+			}
+			return $result;
+		}
+
+		/**
+		 * Set the HTTP headers that are necessary to download updates from private repositories.
+		 *
+		 * See GitHub docs:
+		 * @link https://developer.github.com/v3/repos/releases/#get-a-single-release-asset
+		 * @link https://developer.github.com/v3/auth/#basic-authentication
+		 *
+		 * @internal
+		 * @param array $requestArgs
+		 * @param string $url
+		 * @return array
+		 */
+		public function setUpdateDownloadHeaders($requestArgs, $url = '') {
+			//Is WordPress trying to download one of our release assets?
+			if ( $this->releaseAssetsEnabled && (strpos($url, $this->assetApiBaseUrl) !== false) ) {
+				$requestArgs['headers']['Accept'] = 'application/octet-stream';
+			}
+			//Use Basic authentication, but only if the download is from our repository.
+			$repoApiBaseUrl = $this->buildApiUrl('/repos/:user/:repo/', array());
+			if ( $this->isAuthenticationEnabled() && (strpos($url, $repoApiBaseUrl)) === 0 ) {
+				$requestArgs['headers']['Authorization'] = $this->getAuthorizationHeader();
+			}
+			return $requestArgs;
+		}
+
+		/**
+		 * When following a redirect, the Requests library will automatically forward
+		 * the authorization header to other hosts. We don't want that because it breaks
+		 * AWS downloads and can leak authorization information.
+		 *
+		 * @internal
+		 * @param string $location
+		 * @param array $headers
+		 */
+		public function removeAuthHeaderFromRedirects(&$location, &$headers) {
+			$repoApiBaseUrl = $this->buildApiUrl('/repos/:user/:repo/', array());
+			if ( strpos($location, $repoApiBaseUrl) === 0 ) {
+				return; //This request is going to GitHub, so it's fine.
+			}
+			//Remove the header.
+			if ( isset($headers['Authorization']) ) {
+				unset($headers['Authorization']);
+			}
+		}
+
+		/**
+		 * Generate the value of the "Authorization" header.
+		 *
+		 * @return string
+		 */
+		protected function getAuthorizationHeader() {
+			return 'Basic ' . base64_encode($this->userName . ':' . $this->accessToken);
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/Vcs/GitLabApi.php

@@ -0,0 +1,400 @@
+<?php
+
+if ( !class_exists('Puc_v4p13_Vcs_GitLabApi', false) ):
+
+	class Puc_v4p13_Vcs_GitLabApi extends Puc_v4p13_Vcs_Api {
+		/**
+		 * @var string GitLab username.
+		 */
+		protected $userName;
+
+		/**
+		 * @var string GitLab server host.
+		 */
+		protected $repositoryHost;
+
+		/**
+		 * @var string Protocol used by this GitLab server: "http" or "https".
+		 */
+		protected $repositoryProtocol = 'https';
+
+		/**
+		 * @var string GitLab repository name.
+		 */
+		protected $repositoryName;
+
+		/**
+		 * @var string GitLab authentication token. Optional.
+		 */
+		protected $accessToken;
+
+		/**
+		 * @var bool Whether to download release assets instead of the auto-generated source code archives.
+		 */
+		protected $releaseAssetsEnabled = false;
+
+		/**
+		 * @var bool Whether to download release asset package rather than release asset source.
+		 */
+		protected $releasePackageEnabled = false;
+
+		public function __construct($repositoryUrl, $accessToken = null, $subgroup = null) {
+			//Parse the repository host to support custom hosts.
+			$port = parse_url($repositoryUrl, PHP_URL_PORT);
+			if ( !empty($port) ) {
+				$port = ':' . $port;
+			}
+			$this->repositoryHost = parse_url($repositoryUrl, PHP_URL_HOST) . $port;
+
+			if ( $this->repositoryHost !== 'gitlab.com' ) {
+				$this->repositoryProtocol = parse_url($repositoryUrl, PHP_URL_SCHEME);
+			}
+
+			//Find the repository information
+			$path = parse_url($repositoryUrl, PHP_URL_PATH);
+			if ( preg_match('@^/?(?P<username>[^/]+?)/(?P<repository>[^/#?&]+?)/?$@', $path, $matches) ) {
+				$this->userName = $matches['username'];
+				$this->repositoryName = $matches['repository'];
+			} elseif ( ($this->repositoryHost === 'gitlab.com') ) {
+				//This is probably a repository in a subgroup, e.g. "/organization/category/repo".
+				$parts = explode('/', trim($path, '/'));
+				if ( count($parts) < 3 ) {
+					throw new InvalidArgumentException('Invalid GitLab.com repository URL: "' . $repositoryUrl . '"');
+				}
+				$lastPart = array_pop($parts);
+				$this->userName = implode('/', $parts);
+				$this->repositoryName = $lastPart;
+			} else {
+				//There could be subgroups in the URL:  gitlab.domain.com/group/subgroup/subgroup2/repository
+				if ( $subgroup !== null ) {
+					$path = str_replace(trailingslashit($subgroup), '', $path);
+				}
+
+				//This is not a traditional url, it could be gitlab is in a deeper subdirectory.
+				//Get the path segments.
+				$segments = explode('/', untrailingslashit(ltrim($path, '/')));
+
+				//We need at least /user-name/repository-name/
+				if ( count($segments) < 2 ) {
+					throw new InvalidArgumentException('Invalid GitLab repository URL: "' . $repositoryUrl . '"');
+				}
+
+				//Get the username and repository name.
+				$usernameRepo = array_splice($segments, -2, 2);
+				$this->userName = $usernameRepo[0];
+				$this->repositoryName = $usernameRepo[1];
+
+				//Append the remaining segments to the host if there are segments left.
+				if ( count($segments) > 0 ) {
+					$this->repositoryHost = trailingslashit($this->repositoryHost) . implode('/', $segments);
+				}
+
+				//Add subgroups to username.
+				if ( $subgroup !== null ) {
+					$this->userName = $usernameRepo[0] . '/' . untrailingslashit($subgroup);
+				}
+			}
+
+			parent::__construct($repositoryUrl, $accessToken);
+		}
+
+		/**
+		 * Get the latest release from GitLab.
+		 *
+		 * @return Puc_v4p13_Vcs_Reference|null
+		 */
+		public function getLatestRelease() {
+			$releases = $this->api('/:id/releases');
+			if ( is_wp_error($releases) || empty($releases) || !is_array($releases) ) {
+				return null;
+			}
+
+			foreach ($releases as $release) {
+				if ( true !== $release->upcoming_release ) {
+					break 1; //Break the loop on the first release we find that isn't an upcoming release
+				}
+			}
+			if ( is_wp_error($release) || !is_object($release) || !isset($release->tag_name) ) {
+				return null;
+			}
+
+			$reference = new Puc_v4p13_Vcs_Reference(array(
+				'name'        => $release->tag_name,
+				'version'     => ltrim($release->tag_name, 'v'), //Remove the "v" prefix from "v1.2.3".
+				'downloadUrl' => '',
+				'updated'     => $release->released_at,
+				'apiResponse' => $release,
+			));
+			$download_url = false;
+
+			if ( $this->releasePackageEnabled && isset($release->assets, $release->assets->links) ) {
+				/**
+				 * Use the first asset LINK that is a zip format file generated by a Gitlab Release Pipeline
+				 *
+				 * @link https://gist.github.com/timwiel/9dfd3526c768efad4973254085e065ce
+				 */
+				foreach ($release->assets->links as $link) {
+					//TODO: Check the "format" property instead of the URL suffix.
+					if ( 'zip' === substr($link->url, -3) ) {
+						$download_url = $link->url;
+						break 1;
+					}
+				}
+				if ( empty( $download_url ) ) {
+					return null;
+				}
+				if ( ! empty( $this->accessToken ) ) {
+					$download_url = add_query_arg('private_token', $this->accessToken, $download_url);
+				}
+				$reference->downloadUrl = $download_url;
+				return $reference;
+
+			} elseif ( isset($release->assets) ) {
+				/**
+				 * Use the first asset SOURCE file that is a zip format from a Gitlab Release which should be a zip file
+				 */
+				foreach ($release->assets->sources as $source) {
+					if ( 'zip' === $source->format ) {
+						$download_url = $source->url;
+						break 1;
+					}
+				}
+				if ( empty( $download_url ) ) {
+					return null;
+				}
+				if ( ! empty( $this->accessToken ) ) {
+					$download_url = add_query_arg('private_token', $this->accessToken, $download_url);
+				}
+				$reference->downloadUrl = $download_url;
+				return $reference;
+
+			}
+
+			//If we get this far without a return then obviosuly noi release download urls were found
+			return null;
+			}
+
+		/**
+		 * Get the tag that looks like the highest version number.
+		 *
+		 * @return Puc_v4p13_Vcs_Reference|null
+		 */
+		public function getLatestTag() {
+			$tags = $this->api('/:id/repository/tags');
+			if ( is_wp_error($tags) || empty($tags) || !is_array($tags) ) {
+				return null;
+			}
+
+			$versionTags = $this->sortTagsByVersion($tags);
+			if ( empty($versionTags) ) {
+				return null;
+			}
+
+			$tag = $versionTags[0];
+			return new Puc_v4p13_Vcs_Reference(array(
+				'name'        => $tag->name,
+				'version'     => ltrim($tag->name, 'v'),
+				'downloadUrl' => $this->buildArchiveDownloadUrl($tag->name),
+				'apiResponse' => $tag,
+			));
+		}
+
+		/**
+		 * Get a branch by name.
+		 *
+		 * @param string $branchName
+		 * @return null|Puc_v4p13_Vcs_Reference
+		 */
+		public function getBranch($branchName) {
+			$branch = $this->api('/:id/repository/branches/' . $branchName);
+			if ( is_wp_error($branch) || empty($branch) ) {
+				return null;
+			}
+
+			$reference = new Puc_v4p13_Vcs_Reference(array(
+				'name'        => $branch->name,
+				'downloadUrl' => $this->buildArchiveDownloadUrl($branch->name),
+				'apiResponse' => $branch,
+			));
+
+			if ( isset($branch->commit, $branch->commit->committed_date) ) {
+				$reference->updated = $branch->commit->committed_date;
+			}
+
+			return $reference;
+		}
+
+		/**
+		 * Get the timestamp of the latest commit that changed the specified branch or tag.
+		 *
+		 * @param string $ref Reference name (e.g. branch or tag).
+		 * @return string|null
+		 */
+		public function getLatestCommitTime($ref) {
+			$commits = $this->api('/:id/repository/commits/', array('ref_name' => $ref));
+			if ( is_wp_error($commits) || !is_array($commits) || !isset($commits[0]) ) {
+				return null;
+			}
+
+			return $commits[0]->committed_date;
+		}
+
+		/**
+		 * Perform a GitLab API request.
+		 *
+		 * @param string $url
+		 * @param array $queryParams
+		 * @return mixed|WP_Error
+		 */
+		protected function api($url, $queryParams = array()) {
+			$baseUrl = $url;
+			$url = $this->buildApiUrl($url, $queryParams);
+
+			$options = array('timeout' => 10);
+			if ( !empty($this->httpFilterName) ) {
+				$options = apply_filters($this->httpFilterName, $options);
+			}
+
+			$response = wp_remote_get($url, $options);
+			if ( is_wp_error($response) ) {
+				do_action('puc_api_error', $response, null, $url, $this->slug);
+				return $response;
+			}
+
+			$code = wp_remote_retrieve_response_code($response);
+			$body = wp_remote_retrieve_body($response);
+			if ( $code === 200 ) {
+				return json_decode($body);
+			}
+
+			$error = new WP_Error(
+				'puc-gitlab-http-error',
+				sprintf('GitLab API error. URL: "%s",  HTTP status code: %d.', $baseUrl, $code)
+			);
+			do_action('puc_api_error', $error, $response, $url, $this->slug);
+
+			return $error;
+		}
+
+		/**
+		 * Build a fully qualified URL for an API request.
+		 *
+		 * @param string $url
+		 * @param array $queryParams
+		 * @return string
+		 */
+		protected function buildApiUrl($url, $queryParams) {
+			$variables = array(
+				'user' => $this->userName,
+				'repo' => $this->repositoryName,
+				'id'   => $this->userName . '/' . $this->repositoryName,
+			);
+
+			foreach ($variables as $name => $value) {
+				$url = str_replace("/:{$name}", '/' . urlencode($value), $url);
+			}
+
+			$url = substr($url, 1);
+			$url = sprintf('%1$s://%2$s/api/v4/projects/%3$s', $this->repositoryProtocol, $this->repositoryHost, $url);
+
+			if ( !empty($this->accessToken) ) {
+				$queryParams['private_token'] = $this->accessToken;
+			}
+
+			if ( !empty($queryParams) ) {
+				$url = add_query_arg($queryParams, $url);
+			}
+
+			return $url;
+		}
+
+		/**
+		 * Get the contents of a file from a specific branch or tag.
+		 *
+		 * @param string $path File name.
+		 * @param string $ref
+		 * @return null|string Either the contents of the file, or null if the file doesn't exist or there's an error.
+		 */
+		public function getRemoteFile($path, $ref = 'master') {
+			$response = $this->api('/:id/repository/files/' . $path, array('ref' => $ref));
+			if ( is_wp_error($response) || !isset($response->content) || $response->encoding !== 'base64' ) {
+				return null;
+			}
+
+			return base64_decode($response->content);
+		}
+
+		/**
+		 * Generate a URL to download a ZIP archive of the specified branch/tag/etc.
+		 *
+		 * @param string $ref
+		 * @return string
+		 */
+		public function buildArchiveDownloadUrl($ref = 'master') {
+			$url = sprintf(
+				'%1$s://%2$s/api/v4/projects/%3$s/repository/archive.zip',
+				$this->repositoryProtocol,
+				$this->repositoryHost,
+				urlencode($this->userName . '/' . $this->repositoryName)
+			);
+			$url = add_query_arg('sha', urlencode($ref), $url);
+
+			if ( !empty($this->accessToken) ) {
+				$url = add_query_arg('private_token', $this->accessToken, $url);
+			}
+
+			return $url;
+		}
+
+		/**
+		 * Get a specific tag.
+		 *
+		 * @param string $tagName
+		 * @return void
+		 */
+		public function getTag($tagName) {
+			throw new LogicException('The ' . __METHOD__ . ' method is not implemented and should not be used.');
+		}
+
+		/**
+		 * Figure out which reference (i.e tag or branch) contains the latest version.
+		 *
+		 * @param string $configBranch Start looking in this branch.
+		 * @return null|Puc_v4p13_Vcs_Reference
+		 */
+		public function chooseReference($configBranch) {
+
+			if ( $configBranch === 'main' || $configBranch === 'master' ) {
+				//Use the latest release.
+				$updateSource = $this->getLatestRelease();
+				if ( $updateSource === null ) {
+					//Failing that, use the tag with the highest version number.
+					$updateSource = $this->getLatestTag();
+				}
+			}
+			//Alternatively, just use the branch itself.
+			if ( empty($updateSource) ) {
+				$updateSource = $this->getBranch($configBranch);
+			}
+
+			return $updateSource;
+		}
+
+		public function setAuthentication($credentials) {
+			parent::setAuthentication($credentials);
+			$this->accessToken = is_string($credentials) ? $credentials : null;
+		}
+
+		public function enableReleaseAssets() {
+			$this->releaseAssetsEnabled  = true;
+			$this->releasePackageEnabled = false;
+		}
+
+		public function enableReleasePackages() {
+			$this->releaseAssetsEnabled  = false;
+			$this->releasePackageEnabled = true;
+		}
+
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/Vcs/PluginUpdateChecker.php

@@ -0,0 +1,293 @@
+<?php
+if ( !class_exists('Puc_v4p13_Vcs_PluginUpdateChecker') ):
+
+	class Puc_v4p13_Vcs_PluginUpdateChecker extends Puc_v4p13_Plugin_UpdateChecker implements Puc_v4p13_Vcs_BaseChecker {
+		/**
+		 * @var string The branch where to look for updates. Defaults to "master".
+		 */
+		protected $branch = 'master';
+
+		/**
+		 * @var Puc_v4p13_Vcs_Api Repository API client.
+		 */
+		protected $api = null;
+
+		/**
+		 * Puc_v4p13_Vcs_PluginUpdateChecker constructor.
+		 *
+		 * @param Puc_v4p13_Vcs_Api $api
+		 * @param string $pluginFile
+		 * @param string $slug
+		 * @param int $checkPeriod
+		 * @param string $optionName
+		 * @param string $muPluginFile
+		 */
+		public function __construct($api, $pluginFile, $slug = '', $checkPeriod = 12, $optionName = '', $muPluginFile = '') {
+			$this->api = $api;
+			$this->api->setHttpFilterName($this->getUniqueName('request_info_options'));
+
+			parent::__construct($api->getRepositoryUrl(), $pluginFile, $slug, $checkPeriod, $optionName, $muPluginFile);
+
+			$this->api->setSlug($this->slug);
+		}
+
+		public function requestInfo($unusedParameter = null) {
+			//We have to make several remote API requests to gather all the necessary info
+			//which can take a while on slow networks.
+			if ( function_exists('set_time_limit') ) {
+				@set_time_limit(60);
+			}
+
+			$api = $this->api;
+			$api->setLocalDirectory($this->package->getAbsoluteDirectoryPath());
+
+			$info = new Puc_v4p13_Plugin_Info();
+			$info->filename = $this->pluginFile;
+			$info->slug = $this->slug;
+
+			$this->setInfoFromHeader($this->package->getPluginHeader(), $info);
+			$this->setIconsFromLocalAssets($info);
+			$this->setBannersFromLocalAssets($info);
+
+			//Pick a branch or tag.
+			$updateSource = $api->chooseReference($this->branch);
+			if ( $updateSource ) {
+				$ref = $updateSource->name;
+				$info->version = $updateSource->version;
+				$info->last_updated = $updateSource->updated;
+				$info->download_url = $updateSource->downloadUrl;
+
+				if ( !empty($updateSource->changelog) ) {
+					$info->sections['changelog'] = $updateSource->changelog;
+				}
+				if ( isset($updateSource->downloadCount) ) {
+					$info->downloaded = $updateSource->downloadCount;
+				}
+			} else {
+				//There's probably a network problem or an authentication error.
+				do_action(
+					'puc_api_error',
+					new WP_Error(
+						'puc-no-update-source',
+						'Could not retrieve version information from the repository. '
+						. 'This usually means that the update checker either can\'t connect '
+						. 'to the repository or it\'s configured incorrectly.'
+					),
+					null, null, $this->slug
+				);
+				return null;
+			}
+
+			//Get headers from the main plugin file in this branch/tag. Its "Version" header and other metadata
+			//are what the WordPress install will actually see after upgrading, so they take precedence over releases/tags.
+			$mainPluginFile = basename($this->pluginFile);
+			$remotePlugin = $api->getRemoteFile($mainPluginFile, $ref);
+			if ( !empty($remotePlugin) ) {
+				$remoteHeader = $this->package->getFileHeader($remotePlugin);
+				$this->setInfoFromHeader($remoteHeader, $info);
+			}
+
+			//Try parsing readme.txt. If it's formatted according to WordPress.org standards, it will contain
+			//a lot of useful information like the required/tested WP version, changelog, and so on.
+			if ( $this->readmeTxtExistsLocally() ) {
+				$this->setInfoFromRemoteReadme($ref, $info);
+			}
+
+			//The changelog might be in a separate file.
+			if ( empty($info->sections['changelog']) ) {
+				$info->sections['changelog'] = $api->getRemoteChangelog($ref, $this->package->getAbsoluteDirectoryPath());
+				if ( empty($info->sections['changelog']) ) {
+					$info->sections['changelog'] = __('There is no changelog available.', 'plugin-update-checker');
+				}
+			}
+
+			if ( empty($info->last_updated) ) {
+				//Fetch the latest commit that changed the tag or branch and use it as the "last_updated" date.
+				$latestCommitTime = $api->getLatestCommitTime($ref);
+				if ( $latestCommitTime !== null ) {
+					$info->last_updated = $latestCommitTime;
+				}
+			}
+
+			$info = apply_filters($this->getUniqueName('request_info_result'), $info, null);
+			return $info;
+		}
+
+		/**
+		 * Check if the currently installed version has a readme.txt file.
+		 *
+		 * @return bool
+		 */
+		protected function readmeTxtExistsLocally() {
+			return $this->package->fileExists($this->api->getLocalReadmeName());
+		}
+
+		/**
+		 * Copy plugin metadata from a file header to a Plugin Info object.
+		 *
+		 * @param array $fileHeader
+		 * @param Puc_v4p13_Plugin_Info $pluginInfo
+		 */
+		protected function setInfoFromHeader($fileHeader, $pluginInfo) {
+			$headerToPropertyMap = array(
+				'Version' => 'version',
+				'Name' => 'name',
+				'PluginURI' => 'homepage',
+				'Author' => 'author',
+				'AuthorName' => 'author',
+				'AuthorURI' => 'author_homepage',
+
+				'Requires WP' => 'requires',
+				'Tested WP' => 'tested',
+				'Requires at least' => 'requires',
+				'Tested up to' => 'tested',
+
+				'Requires PHP' => 'requires_php',
+			);
+			foreach ($headerToPropertyMap as $headerName => $property) {
+				if ( isset($fileHeader[$headerName]) && !empty($fileHeader[$headerName]) ) {
+					$pluginInfo->$property = $fileHeader[$headerName];
+				}
+			}
+
+			if ( !empty($fileHeader['Description']) ) {
+				$pluginInfo->sections['description'] = $fileHeader['Description'];
+			}
+		}
+
+		/**
+		 * Copy plugin metadata from the remote readme.txt file.
+		 *
+		 * @param string $ref GitHub tag or branch where to look for the readme.
+		 * @param Puc_v4p13_Plugin_Info $pluginInfo
+		 */
+		protected function setInfoFromRemoteReadme($ref, $pluginInfo) {
+			$readme = $this->api->getRemoteReadme($ref);
+			if ( empty($readme) ) {
+				return;
+			}
+
+			if ( isset($readme['sections']) ) {
+				$pluginInfo->sections = array_merge($pluginInfo->sections, $readme['sections']);
+			}
+			if ( !empty($readme['tested_up_to']) ) {
+				$pluginInfo->tested = $readme['tested_up_to'];
+			}
+			if ( !empty($readme['requires_at_least']) ) {
+				$pluginInfo->requires = $readme['requires_at_least'];
+			}
+			if ( !empty($readme['requires_php']) ) {
+				$pluginInfo->requires_php = $readme['requires_php'];
+			}
+
+			if ( isset($readme['upgrade_notice'], $readme['upgrade_notice'][$pluginInfo->version]) ) {
+				$pluginInfo->upgrade_notice = $readme['upgrade_notice'][$pluginInfo->version];
+			}
+		}
+
+		/**
+		 * Add icons from the currently installed version to a Plugin Info object.
+		 *
+		 * The icons should be in a subdirectory named "assets". Supported image formats
+		 * and file names are described here:
+		 * @link https://developer.wordpress.org/plugins/wordpress-org/plugin-assets/#plugin-icons
+		 *
+		 * @param Puc_v4p13_Plugin_Info $pluginInfo
+		 */
+		protected function setIconsFromLocalAssets($pluginInfo) {
+			$icons = $this->getLocalAssetUrls(array(
+				'icon.svg'         => 'svg',
+				'icon-256x256.png' => '2x',
+				'icon-256x256.jpg' => '2x',
+				'icon-128x128.png' => '1x',
+				'icon-128x128.jpg' => '1x',
+			));
+
+			if ( !empty($icons) ) {
+				//The "default" key seems to be used only as last-resort fallback in WP core (5.8/5.9),
+				//but we'll set it anyway in case some code somewhere needs it.
+				reset($icons);
+				$firstKey = key($icons);
+				$icons['default'] = $icons[$firstKey];
+
+				$pluginInfo->icons = $icons;
+			}
+		}
+
+		/**
+		 * Add banners from the currently installed version to a Plugin Info object.
+		 *
+		 * The banners should be in a subdirectory named "assets". Supported image formats
+		 * and file names are described here:
+		 * @link https://developer.wordpress.org/plugins/wordpress-org/plugin-assets/#plugin-headers
+		 *
+		 * @param Puc_v4p13_Plugin_Info $pluginInfo
+		 */
+		protected function setBannersFromLocalAssets($pluginInfo) {
+			$banners = $this->getLocalAssetUrls(array(
+				'banner-772x250.png' => 'high',
+				'banner-772x250.jpg' => 'high',
+				'banner-1544x500.png' => 'low',
+				'banner-1544x500.jpg' => 'low',
+			));
+
+			if ( !empty($banners) ) {
+				$pluginInfo->banners = $banners;
+			}
+		}
+
+		/**
+		 * @param array<string, string> $filesToKeys
+		 * @return array<string, string>
+		 */
+		protected function getLocalAssetUrls($filesToKeys) {
+			$assetDirectory = $this->package->getAbsoluteDirectoryPath() . DIRECTORY_SEPARATOR . 'assets';
+			if ( !is_dir($assetDirectory) ) {
+				return array();
+			}
+			$assetBaseUrl = trailingslashit(plugins_url('', $assetDirectory . '/imaginary.file'));
+
+			$foundAssets = array();
+			foreach ($filesToKeys as $fileName => $key) {
+				$fullBannerPath = $assetDirectory . DIRECTORY_SEPARATOR . $fileName;
+				if ( !isset($icons[$key]) && is_file($fullBannerPath) ) {
+					$foundAssets[$key] = $assetBaseUrl . $fileName;
+				}
+			}
+
+			return $foundAssets;
+		}
+
+		public function setBranch($branch) {
+			$this->branch = $branch;
+			return $this;
+		}
+
+		public function setAuthentication($credentials) {
+			$this->api->setAuthentication($credentials);
+			return $this;
+		}
+
+		public function getVcsApi() {
+			return $this->api;
+		}
+
+		public function getUpdate() {
+			$update = parent::getUpdate();
+
+			if ( isset($update) && !empty($update->download_url) ) {
+				$update->download_url = $this->api->signDownloadUrl($update->download_url);
+			}
+
+			return $update;
+		}
+
+		public function onDisplayConfiguration($panel) {
+			parent::onDisplayConfiguration($panel);
+			$panel->row('Branch', $this->branch);
+			$panel->row('Authentication enabled', $this->api->isAuthenticationEnabled() ? 'Yes' : 'No');
+			$panel->row('API client', get_class($this->api));
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/Vcs/Reference.php

@@ -0,0 +1,49 @@
+<?php
+if ( !class_exists('Puc_v4p13_Vcs_Reference', false) ):
+
+	/**
+	 * This class represents a VCS branch or tag. It's intended as a read only, short-lived container
+	 * that only exists to provide a limited degree of type checking.
+	 *
+	 * @property string $name
+	 * @property string|null version
+	 * @property string $downloadUrl
+	 * @property string $updated
+	 *
+	 * @property string|null $changelog
+	 * @property int|null $downloadCount
+	 */
+	class Puc_v4p13_Vcs_Reference {
+		private $properties = array();
+
+		public function __construct($properties = array()) {
+			$this->properties = $properties;
+		}
+
+		/**
+		 * @param string $name
+		 * @return mixed|null
+		 */
+		public function __get($name) {
+			return array_key_exists($name, $this->properties) ? $this->properties[$name] : null;
+		}
+
+		/**
+		 * @param string $name
+		 * @param mixed $value
+		 */
+		public function __set($name, $value) {
+			$this->properties[$name] = $value;
+		}
+
+		/**
+		 * @param string $name
+		 * @return bool
+		 */
+		public function __isset($name) {
+			return isset($this->properties[$name]);
+		}
+
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v4p13/Vcs/ThemeUpdateChecker.php

@@ -0,0 +1,118 @@
+<?php
+
+if ( !class_exists('Puc_v4p13_Vcs_ThemeUpdateChecker', false) ):
+
+	class Puc_v4p13_Vcs_ThemeUpdateChecker extends Puc_v4p13_Theme_UpdateChecker implements Puc_v4p13_Vcs_BaseChecker {
+		/**
+		 * @var string The branch where to look for updates. Defaults to "master".
+		 */
+		protected $branch = 'master';
+
+		/**
+		 * @var Puc_v4p13_Vcs_Api Repository API client.
+		 */
+		protected $api = null;
+
+		/**
+		 * Puc_v4p13_Vcs_ThemeUpdateChecker constructor.
+		 *
+		 * @param Puc_v4p13_Vcs_Api $api
+		 * @param null $stylesheet
+		 * @param null $customSlug
+		 * @param int $checkPeriod
+		 * @param string $optionName
+		 */
+		public function __construct($api, $stylesheet = null, $customSlug = null, $checkPeriod = 12, $optionName = '') {
+			$this->api = $api;
+			$this->api->setHttpFilterName($this->getUniqueName('request_update_options'));
+
+			parent::__construct($api->getRepositoryUrl(), $stylesheet, $customSlug, $checkPeriod, $optionName);
+
+			$this->api->setSlug($this->slug);
+		}
+
+		public function requestUpdate() {
+			$api = $this->api;
+			$api->setLocalDirectory($this->package->getAbsoluteDirectoryPath());
+
+			$update = new Puc_v4p13_Theme_Update();
+			$update->slug = $this->slug;
+
+			//Figure out which reference (tag or branch) we'll use to get the latest version of the theme.
+			$updateSource = $api->chooseReference($this->branch);
+			if ( $updateSource ) {
+				$ref = $updateSource->name;
+				$update->download_url = $updateSource->downloadUrl;
+			} else {
+				do_action(
+					'puc_api_error',
+					new WP_Error(
+						'puc-no-update-source',
+						'Could not retrieve version information from the repository. '
+						. 'This usually means that the update checker either can\'t connect '
+						. 'to the repository or it\'s configured incorrectly.'
+					),
+					null, null, $this->slug
+				);
+				$ref = $this->branch;
+			}
+
+			//Get headers from the main stylesheet in this branch/tag. Its "Version" header and other metadata
+			//are what the WordPress install will actually see after upgrading, so they take precedence over releases/tags.
+			$remoteHeader = $this->package->getFileHeader($api->getRemoteFile('style.css', $ref));
+			$update->version = Puc_v4p13_Utils::findNotEmpty(array(
+				$remoteHeader['Version'],
+				Puc_v4p13_Utils::get($updateSource, 'version'),
+			));
+
+			//The details URL defaults to the Theme URI header or the repository URL.
+			$update->details_url = Puc_v4p13_Utils::findNotEmpty(array(
+				$remoteHeader['ThemeURI'],
+				$this->package->getHeaderValue('ThemeURI'),
+				$this->metadataUrl,
+			));
+
+			if ( empty($update->version) ) {
+				//It looks like we didn't find a valid update after all.
+				$update = null;
+			}
+
+			$update = $this->filterUpdateResult($update);
+			return $update;
+		}
+
+		//FIXME: This is duplicated code. Both theme and plugin subclasses that use VCS share these methods.
+
+		public function setBranch($branch) {
+			$this->branch = $branch;
+			return $this;
+		}
+
+		public function setAuthentication($credentials) {
+			$this->api->setAuthentication($credentials);
+			return $this;
+		}
+
+		public function getVcsApi() {
+			return $this->api;
+		}
+
+		public function getUpdate() {
+			$update = parent::getUpdate();
+
+			if ( isset($update) && !empty($update->download_url) ) {
+				$update->download_url = $this->api->signDownloadUrl($update->download_url);
+			}
+
+			return $update;
+		}
+
+		public function onDisplayConfiguration($panel) {
+			parent::onDisplayConfiguration($panel);
+			$panel->row('Branch', $this->branch);
+			$panel->row('Authentication enabled', $this->api->isAuthenticationEnabled() ? 'Yes' : 'No');
+			$panel->row('API client', get_class($this->api));
+		}
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/README.md

@@ -0,0 +1,326 @@
+Plugin Update Checker
+=====================
+
+This is a custom update checker library for WordPress plugins and themes. It lets you add automatic update notifications and one-click upgrades to your commercial plugins, private themes, and so on. All you need to do is put your plugin/theme details in a JSON file, place the file on your server, and pass the URL to the library. The library periodically checks the URL to see if there's a new version available and displays an update notification to the user if necessary.
+
+From the users' perspective, it works just like with plugins and themes hosted on WordPress.org. The update checker uses the default upgrade UI that is familiar to most WordPress users.
+
+<!-- START doctoc generated TOC please keep comment here to allow auto update -->
+<!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
+**Table of Contents**
+
+- [Getting Started](#getting-started)
+  - [Self-hosted Plugins and Themes](#self-hosted-plugins-and-themes)
+    - [How to Release an Update](#how-to-release-an-update)
+    - [Notes](#notes)
+  - [GitHub Integration](#github-integration)
+    - [How to Release an Update](#how-to-release-an-update-1)
+    - [Notes](#notes-1)
+  - [BitBucket Integration](#bitbucket-integration)
+    - [How to Release an Update](#how-to-release-an-update-2)
+  - [GitLab Integration](#gitlab-integration)
+    - [How to Release a GitLab Update](#how-to-release-a-gitlab-update)
+- [License Management](#license-management)
+- [Resources](#resources)
+
+<!-- END doctoc generated TOC please keep comment here to allow auto update -->
+
+Getting Started
+---------------
+
+*Note:* In each of the below examples, part of the instructions are to create an instance of the update checker class. It's recommended to do this either during the `plugins_loaded` action or outside of any hooks. If you do it only during an `admin_*` action, then updates will not be visible to a wide variety of WordPress maanagement tools; they will only be visible to logged-in users on dashboard pages.
+
+### Self-hosted Plugins and Themes
+
+1. Download [the latest release](https://github.com/YahnisElsts/plugin-update-checker/releases/latest) and copy the `plugin-update-checker` directory to your plugin or theme.
+2. Go to the `examples` subdirectory and open the .json file that fits your project type. Replace the placeholder data with your plugin/theme details. 
+	- Plugin example:
+	
+		```json
+		{
+			"name" : "Plugin Name",
+			"version" : "2.0",
+			"download_url" : "http://example.com/plugin-name-2.0.zip",
+			"sections" : {
+				"description" : "Plugin description here. You can use HTML."
+			}
+		}
+		```
+		
+        This is a minimal example that leaves out optional fields. See [this table](https://docs.google.com/spreadsheets/d/1eOBbW7Go2qEQXReOOCdidMTf_tDYRq4JfegcO1CBPIs/edit?usp=sharing) for a full list of supported fields and their descriptions.
+	- Theme example:
+	
+		```json
+		{
+			"version": "2.0",
+			"details_url": "http://example.com/version-2.0-details.html",
+			"download_url": "http://example.com/example-theme-2.0.zip"
+		}
+		```
+		
+		This is actually a complete example that shows all theme-related fields. `version` and `download_url` should be self-explanatory. The `details_url` key specifies the page that the user will see if they click the "View version 1.2.3 details" link in an update notification.  
+3. Upload the JSON file to a publicly accessible location.
+4. Add the following code to the main plugin file or to the `functions.php` file:
+
+	```php
+	require 'path/to/plugin-update-checker/plugin-update-checker.php';
+	$myUpdateChecker = Puc_v4_Factory::buildUpdateChecker(
+		'http://example.com/path/to/details.json',
+		__FILE__, //Full path to the main plugin file or functions.php.
+		'unique-plugin-or-theme-slug'
+	);
+	```
+	Note: If you're using the Composer autoloader, you don't need to explicitly `require` the library.
+
+#### How to Release an Update
+
+Change the `version` number in the JSON file and make sure that `download_url` points to the latest version. Update the other fields if necessary. Tip: You can use [wp-update-server](https://github.com/YahnisElsts/wp-update-server) to automate this process.
+
+By default, the library will check the specified URL for changes every 12 hours. You can force it to check immediately by clicking the "Check for updates" link on the "Plugins" page (it's next to the "Visit plugin site" link). Themes don't have that link, but you can also trigger an update check like this:
+ 
+ 1. Install [Debug Bar](https://srd.wordpress.org/plugins/debug-bar/).
+ 2. Click the "Debug" menu in the Admin Bar (a.k.a Toolbar).
+ 3. Open the "PUC (your-slug)" panel. 
+ 4. Click the "Check Now" button.  
+
+#### Notes
+- The second argument passed to `buildUpdateChecker` must be the absolute path to the main plugin file or any file in the theme directory. If you followed the "getting started" instructions, you can just use the `__FILE__` constant.
+- The third argument - i.e. the slug - is optional but recommended. In most cases, the slug should be the same as the name of your plugin directory. For example, if your plugin lives in `/wp-content/plugins/my-plugin`, set the slug to `my-plugin`. If the slug is omitted, the update checker will use the name of the main plugin file as the slug (e.g. `my-cool-plugin.php` &rarr; `my-cool-plugin`). This can lead to conflicts if your plugin has a generic file name like `plugin.php`. 
+	
+	This doesn't affect themes because PUC uses the theme directory name as the default slug. Still, if you're planning to use the slug in your own code - e.g. to filter updates or override update checker behaviour - it can be a good idea to set it explicitly. 
+
+### GitHub Integration
+
+1. Download [the latest release](https://github.com/YahnisElsts/plugin-update-checker/releases/latest) and copy the `plugin-update-checker` directory to your plugin or theme.
+2. Add the following code to the main plugin file or `functions.php`:
+
+	```php
+	require 'plugin-update-checker/plugin-update-checker.php';
+	$myUpdateChecker = Puc_v4_Factory::buildUpdateChecker(
+		'https://github.com/user-name/repo-name/',
+		__FILE__,
+		'unique-plugin-or-theme-slug'
+	);
+	
+	//Set the branch that contains the stable release.
+	$myUpdateChecker->setBranch('stable-branch-name');
+
+	//Optional: If you're using a private repository, specify the access token like this:
+	$myUpdateChecker->setAuthentication('your-token-here');
+	```
+3. Plugins only: Add a `readme.txt` file formatted according to the [WordPress.org plugin readme standard](https://wordpress.org/plugins/readme.txt) to your repository. The contents of this file will be shown when the user clicks the "View version 1.2.3 details" link.
+
+#### How to Release an Update
+
+This library supports a couple of different ways to release updates on GitHub. Pick the one that best fits your workflow.
+
+- **GitHub releases** 
+	
+	Create a new release using the "Releases" feature on GitHub. The tag name and release title don't matter. The description is optional, but if you do provide one, it will be displayed when the user clicks the "View version x.y.z details" link on the "Plugins" page. Note that PUC ignores releases marked as "This is a pre-release".
+	
+	If you want to use release assets, call the `enableReleaseAssets()` method after creating the update checker instance:
+	```php
+	$myUpdateChecker->getVcsApi()->enableReleaseAssets();
+	```
+	
+- **Tags** 
+	
+	To release version 1.2.3, create a new Git tag named `v1.2.3` or `1.2.3`. That's it.
+	
+	PUC doesn't require strict adherence to [SemVer](http://semver.org/). These are all valid tag names: `v1.2.3`, `v1.2-foo`, `1.2.3_rc1-ABC`, `1.2.3.4.5`. However, be warned that it's not smart enough to filter out alpha/beta/RC versions. If that's a problem, you might want to use GitHub releases or branches instead.
+	
+- **Stable branch** 
+	
+	Point the update checker at a stable, production-ready branch: 
+	 ```php
+	 $updateChecker->setBranch('branch-name');
+	 ```
+	 PUC will periodically check the `Version` header in the main plugin file or `style.css` and display a notification if it's greater than the installed version.
+	 
+	 Caveat: If you set the branch to `master` (the default), the update checker will look for recent releases and tags first. It'll only use the `master` branch if it doesn't find anything else suitable.
+
+#### Notes
+
+The library will pull update details from the following parts of a release/tag/branch:
+
+- Version number
+	- The "Version" plugin header.
+	- The latest GitHub release or tag name.
+- Changelog
+	- The "Changelog" section of `readme.txt`.
+	- One of the following files:
+		CHANGES.md, CHANGELOG.md, changes.md, changelog.md
+	- GitHub release notes.
+- Required and tested WordPress versions
+	- The "Requires at least" and "Tested up to" fields in `readme.txt`.
+	- The following plugin headers:
+		`Required WP`, `Tested WP`, `Requires at least`, `Tested up to`
+- "Last updated" timestamp
+	- The creation timestamp of the latest GitHub release.
+	- The latest commit in the selected tag or branch.
+- Number of downloads
+	- The `download_count` statistic of the latest release.
+	- If you're not using GitHub releases, there will be no download stats.
+- Other plugin details - author, homepage URL, description
+	- The "Description" section of `readme.txt`.
+	- Remote plugin headers (i.e. the latest version on GitHub).
+	- Local plugin headers (i.e. the currently installed version).
+- Ratings, banners, screenshots
+	- Not supported.
+	
+### BitBucket Integration
+
+1. Download [the latest release](https://github.com/YahnisElsts/plugin-update-checker/releases/latest) and copy the `plugin-update-checker` directory to your plugin or theme.
+2. Add the following code to the main plugin file or `functions.php`:
+
+	```php
+	require 'plugin-update-checker/plugin-update-checker.php';
+	$myUpdateChecker = Puc_v4_Factory::buildUpdateChecker(
+		'https://bitbucket.org/user-name/repo-name',
+		__FILE__,
+		'unique-plugin-or-theme-slug'
+	);
+
+	//Optional: If you're using a private repository, create an OAuth consumer
+	//and set the authentication credentials like this:
+	//Note: For now you need to check "This is a private consumer" when
+	//creating the consumer to work around #134:
+	// https://github.com/YahnisElsts/plugin-update-checker/issues/134
+	$myUpdateChecker->setAuthentication(array(
+		'consumer_key' => '...',
+		'consumer_secret' => '...',
+	));
+
+	//Optional: Set the branch that contains the stable release.
+	$myUpdateChecker->setBranch('stable-branch-name');
+	```
+3. Optional: Add a `readme.txt` file formatted according to the [WordPress.org plugin readme standard](https://wordpress.org/plugins/readme.txt) to your repository. For plugins, the contents of this file will be shown when the user clicks the "View version 1.2.3 details" link.
+
+#### How to Release an Update
+
+BitBucket doesn't have an equivalent to GitHub's releases, so the process is slightly different. You can use any of the following approaches: 
+
+- **`Stable tag` header** 
+	
+	This is the recommended approach if you're using tags to mark each version. Add a `readme.txt` file formatted according to the [WordPress.org plugin readme standard](https://wordpress.org/plugins/readme.txt) to your repository. Set the "stable tag" header to the tag that represents the latest release. Example:
+	```text
+	Stable tag: v1.2.3
+	```
+	The tag doesn't have to start with a "v" or follow any particular format. You can use any name you like as long as it's a valid Git tag.
+	
+	Tip: If you explicitly set a stable branch, the update checker will look for a `readme.txt` in that branch. Otherwise it will only look at the `master` branch.
+	
+- **Tags** 
+	
+	You can skip the "stable tag" bit and just create a new Git tag named `v1.2.3` or `1.2.3`. The update checker will look at the most recent tags and pick the one that looks like the highest version number.
+	
+	PUC doesn't require strict adherence to [SemVer](http://semver.org/). These are all valid tag names: `v1.2.3`, `v1.2-foo`, `1.2.3_rc1-ABC`, `1.2.3.4.5`. However, be warned that it's not smart enough to filter out alpha/beta/RC versions.
+	
+- **Stable branch** 
+	
+	Point the update checker at a stable, production-ready branch: 
+	 ```php
+	 $updateChecker->setBranch('branch-name');
+	 ```
+	 PUC will periodically check the `Version` header in the main plugin file or `style.css` and display a notification if it's greater than the installed version. Caveat: If you set the branch to `master`, the update checker will still look for tags first.
+
+### GitLab Integration
+
+1. Download [the latest release](https://github.com/YahnisElsts/plugin-update-checker/releases/latest) and copy the `plugin-update-checker` directory to your plugin or theme.
+2. Add the following code to the main plugin file or `functions.php` and define how you want to check for updates from Gitlab (refer to: [Gitlab: How to Release an Update](#how-to-release-a-gitlab-update)):
+
+	```php
+	require 'plugin-update-checker/plugin-update-checker.php';
+	$myUpdateChecker = Puc_v4_Factory::buildUpdateChecker(
+		'https://gitlab.com/user-name/repo-name/',
+		__FILE__,
+		'unique-plugin-or-theme-slug'
+	);
+
+	//Optional: If you're using a private repository, specify the access token like this:
+	$myUpdateChecker->setAuthentication('your-token-here');
+	```
+
+	Alternatively, if you're using a self-hosted GitLab instance, initialize the update checker like this:
+	```php
+    $myUpdateChecker = new Puc_v4p13_Vcs_PluginUpdateChecker(
+        new Puc_v4p13_Vcs_GitLabApi('https://myserver.com/user-name/repo-name/'),
+        __FILE__,
+        'unique-plugin-or-theme-slug'
+    );
+   //Optional: Add setAuthentication(...) and setBranch(...) as shown above.  
+   ```
+   If you're using a self-hosted GitLab instance and [subgroups or nested groups](https://docs.gitlab.com/ce/user/group/subgroups/index.html), you have to tell the update checker which parts of the URL are subgroups:
+   ```php
+       $myUpdateChecker = new Puc_v4p13_Vcs_PluginUpdateChecker(
+           new Puc_v4p13_Vcs_GitLabApi('https://myserver.com/group-name/subgroup-level1/subgroup-level2/subgroup-level3/repo-name/', null, 'subgroup-level1/subgroup-level2/subgroup-level3'),
+           __FILE__,
+           'unique-plugin-or-theme-slug'
+       );
+
+   ```
+
+3. Plugins only: Add a `readme.txt` file formatted according to the [WordPress.org plugin readme standard](https://wordpress.org/plugins/readme.txt) to your repository. The contents of this file will be shown when the user clicks the "View version 1.2.3 details" link.
+
+#### How to Release a GitLab Update
+A Gitlab repository can be checked for updates in 4 different ways.
+
+1. **Stable branch** (other than `master` or `main`):
+	- Point the update checker at any stable, production-ready branch and PUC will periodically check the `Version` header in the main plugin file or `style.css` and display a notification if it's greater than the installed version.
+	- Add the following code:
+		```php
+		//Add the following code to your main plugin file or `functions.php` file to check for updates from a custom branch
+		$myUpdateChecker->setBranch('stable-branch-name');
+		```
+	- Caveats:
+		- If you set the branch to `main` (the default) or `master` (the historical default), the update checker will look for recent releases and tags first. It'll only use the `main` or `master` branch if it doesn't find anything else suitable.
+
+2. **GitLab Releases using Generic Packages**:
+	- Use a Gitlab CI/CD Pipeline to automatically generate your update on release using a Generic Package. The benefit of using Generic Package assets over the Source Code assets is that the code can already be built and production ready.
+	- Add the following code:
+		```php
+		//Add the following code to your main plugin file or `functions.php` file to check for a new update from releases using generic packages
+		$myUpdateChecker->getVcsApi()->enableReleasePackages();
+		```
+	- PUC will periodically check the release version (i.e. the tag name of the release) and will display a notification if the release is a greater version than the installed version.
+	- The release tag name should loosely follow [SemVer](http://semver.org/) but these are all valid release names: `v1.2.3`, `v1.2-foo`, `1.2.3_rc1-ABC`, `1.2.3.4.5` However, be warned that it's not smart enough to filter out alpha/beta/RC versions. If that's a problem, you might want to use GitLab branches instead.
+	- For more information about *Gitlab Release Generic Packages* refer to the following links:
+		- [Gitlab CI/CD Release Documentation](https://docs.gitlab.com/ee/user/project/releases/#create-release-from-gitlab-ci)
+		- [Gitlab Release Assets as Generic Package Documentation](https://gitlab.com/gitlab-org/release-cli/-/tree/master/docs/examples/release-assets-as-generic-package/)
+		- [Example .gitlab-ci.yml file using Release Generic Packages for generating a update package from the Sensei-LMS wordpress plugin](https://gist.github.com/timwiel/9dfd3526c768efad4973254085e065ce)
+
+
+3. **GitLab Releases using Source Code Assets**:
+    - Create a new release using the "Releases" feature on Gitlab.
+    - Add the following code:
+        ```php
+        //Add the following code to your main plugin file or `functions.php` file to check for a new update from releases using release assets
+        $myUpdateChecker->getVcsApi()->enableReleaseAssets();
+        ```
+    - PUC will periodically check the release version (based on release tag name) and display a notification if the release version is greater than the installed version.
+    - The release name should loosely follow [SemVer](http://semver.org/) but these are all valid release names: `v1.2.3`, `v1.2-foo`, `1.2.3_rc1-ABC`, `1.2.3.4.5` However, be warned that it's not smart enough to filter out alpha/beta/RC versions. If that's a problem, you might want to use GitLab branches instead.
+
+
+4. **Tags** (this is the default option):
+	- To release version 1.2.3, create a new Git tag named `v1.2.3` or `1.2.3`.
+	- Optionally, add the following code:
+		```php
+		//Add the following code to your main plugin file or `functions.php` file to check for updates from the default branch
+		$myUpdateChecker->setBranch('master'); //or 'main'
+		```
+	- PUC doesn't require strict adherence to [SemVer](http://semver.org/). These are all valid tag names: `v1.2.3`, `v1.2-foo`, `1.2.3_rc1-ABC`, `1.2.3.4.5`. However, be warned that it's not smart enough to filter out alpha/beta/RC versions. If that's a problem, you might want to use GitLab branches instead.
+
+License Management
+------------------
+
+Currently, the update checker doesn't have any built-in license management features. It only provides some hooks that you can use to, for example, append license keys to update requests (`$updateChecker->addQueryArgFilter()`). If you're looking for ways to manage and verify licenses, please post your feedback in [this issue](https://github.com/YahnisElsts/plugin-update-checker/issues/222).
+
+Resources
+---------
+
+- [This blog post](http://w-shadow.com/blog/2010/09/02/automatic-updates-for-any-plugin/) has more information about the update checker API. *Slightly out of date.*
+- [Debug Bar](https://wordpress.org/plugins/debug-bar/) - useful for testing and debugging the update checker.
+- [Update format reference](https://docs.google.com/spreadsheets/d/1eOBbW7Go2qEQXReOOCdidMTf_tDYRq4JfegcO1CBPIs/edit?usp=sharing) - describes all fields supported by the JSON-based update information format used by the update checker. Only covers plugins. Themes use a similar but more limited format.
+- [Securing download links](http://w-shadow.com/blog/2013/03/19/plugin-updates-securing-download-links/) - a general overview.
+- [A GUI for entering download credentials](http://open-tools.net/documentation/tutorial-automatic-updates.html#wordpress)
+- [Theme Update Checker](http://w-shadow.com/blog/2011/06/02/automatic-updates-for-commercial-themes/) - an older, theme-only variant of this update checker.

vendor/yahnis-elsts/plugin-update-checker/composer.json

@@ -0,0 +1,23 @@
+{
+	"name": "yahnis-elsts/plugin-update-checker",
+	"type": "library",
+	"description": "A custom update checker for WordPress plugins and themes. Useful if you can't host your plugin in the official WP repository but still want it to support automatic updates.",
+	"keywords": ["wordpress", "plugin updates", "automatic updates", "theme updates"],
+	"homepage": "https://github.com/YahnisElsts/plugin-update-checker/",
+	"license": "MIT",
+	"authors": [
+		{
+			"name": "Yahnis Elsts",
+			"email": "whiteshadow@w-shadow.com",
+			"homepage": "http://w-shadow.com/",
+			"role": "Developer"
+		}
+	],
+	"require": {
+		"php": ">=5.2.0",
+		"ext-json": "*"
+	},
+	"autoload": {
+		"files": ["load-v4p13.php"]
+	}
+}

vendor/yahnis-elsts/plugin-update-checker/css/puc-debug-bar.css

@@ -0,0 +1,70 @@
+.puc-debug-bar-panel-v4 pre {
+	margin-top: 0;
+}
+
+/* Style the debug data table to match "widefat" table style used by WordPress. */
+table.puc-debug-data {
+    width: 100%;
+    clear: both;
+    margin: 0;
+
+    border-spacing: 0;
+    background-color: #f9f9f9;
+
+    border-radius: 3px;
+    border: 1px solid #dfdfdf;
+    border-collapse: separate;
+}
+
+table.puc-debug-data * {
+    word-wrap: break-word;
+}
+
+table.puc-debug-data th {
+	width: 11em;
+    padding: 7px 7px 8px;
+    text-align: left;
+
+    font-family: "Georgia", "Times New Roman", "Bitstream Charter", "Times", serif;
+    font-weight: 400;
+    font-size: 14px;
+    line-height: 1.3em;
+    text-shadow: rgba(255, 255, 255, 0.804) 0 1px 0;
+}
+
+table.puc-debug-data td, table.puc-debug-data th {
+    border-width: 1px 0;
+    border-style: solid;
+
+    border-top-color: #fff;
+    border-bottom-color: #dfdfdf;
+
+    text-transform: none;
+}
+
+table.puc-debug-data td {
+    color: #555;
+    font-size: 12px;
+    padding: 4px 7px 2px;
+    vertical-align: top;
+}
+
+.puc-ajax-response {
+	border: 1px solid #dfdfdf;
+	border-radius: 3px;
+	padding: 0.5em;
+	margin: 5px 0;
+	background-color: white;
+}
+
+.puc-ajax-nonce {
+	display: none;
+}
+
+.puc-ajax-response dt {
+	margin: 0;
+}
+
+.puc-ajax-response dd {
+	margin: 0 0 1em;
+}

vendor/yahnis-elsts/plugin-update-checker/examples/plugin.json

@@ -0,0 +1,52 @@
+{
+	"name": "My Example Plugin",
+	"version": "2.0",
+	"download_url": "http://example.com/updates/example-plugin.zip",
+
+	"homepage": "http://example.com/",
+	"requires": "4.5",
+	"tested": "4.8",
+	"last_updated": "2017-01-01 16:17:00",
+	"upgrade_notice": "Here's why you should upgrade...",
+
+	"author": "Janis Elsts",
+	"author_homepage": "http://example.com/",
+
+	"sections": {
+		"description": "(Required) Plugin description. Basic HTML can be used in all sections.",
+		"installation": "(Recommended) Installation instructions.",
+		"changelog": "(Recommended) Changelog. <p>This section will be displayed by default when the user clicks 'View version x.y.z details'.</p>",
+		"custom_section": "This is a custom section labeled 'Custom Section'."
+	},
+	
+	"icons" : {
+		"1x" : "http://w-shadow.com/files/external-update-example/assets/icon-128x128.png",
+		"2x" : "http://w-shadow.com/files/external-update-example/assets/icon-256x256.png"
+    },
+
+	"banners": {
+		"low": "http://w-shadow.com/files/external-update-example/assets/banner-772x250.png",
+		"high": "http://w-shadow.com/files/external-update-example/assets/banner-1544x500.png"
+	},
+
+	"translations": [
+		{
+			"language": "fr_FR",
+			"version": "4.0",
+			"updated": "2016-04-22 23:22:42",
+			"package": "http://example.com/updates/translations/french-language-pack.zip"
+		},
+		{
+			"language": "de_DE",
+			"version": "5.0",
+			"updated": "2016-04-22 23:22:42",
+			"package": "http://example.com/updates/translations/german-language-pack.zip"
+		}
+	],
+
+	"rating": 90,
+	"num_ratings": 123,
+
+	"downloaded": 1234,
+	"active_installs": 12345
+}

vendor/yahnis-elsts/plugin-update-checker/examples/theme.json

@@ -0,0 +1,5 @@
+{
+	"version": "2.0",
+	"details_url": "http://example.com/version-2.0-details.html",
+	"download_url": "http://example.com/example-theme-2.0.zip"
+}

vendor/yahnis-elsts/plugin-update-checker/js/debug-bar.js

@@ -0,0 +1,52 @@
+jQuery(function($) {
+
+	function runAjaxAction(button, action) {
+		button = $(button);
+		var panel = button.closest('.puc-debug-bar-panel-v4');
+		var responseBox = button.closest('td').find('.puc-ajax-response');
+
+		responseBox.text('Processing...').show();
+		$.post(
+			ajaxurl,
+			{
+				action  : action,
+				uid     : panel.data('uid'),
+				_wpnonce: panel.data('nonce')
+			},
+			function(data) {
+				responseBox.html(data);
+			},
+			'html'
+		);
+	}
+
+	$('.puc-debug-bar-panel-v4 input[name="puc-check-now-button"]').on('click', function() {
+		runAjaxAction(this, 'puc_v4_debug_check_now');
+		return false;
+	});
+
+	$('.puc-debug-bar-panel-v4 input[name="puc-request-info-button"]').on('click', function() {
+		runAjaxAction(this, 'puc_v4_debug_request_info');
+		return false;
+	});
+
+
+	// Debug Bar uses the panel class name as part of its link and container IDs. This means we can
+	// end up with multiple identical IDs if more than one plugin uses the update checker library.
+	// Fix it by replacing the class name with the plugin slug.
+	var panels = $('#debug-menu-targets').find('.puc-debug-bar-panel-v4');
+	panels.each(function() {
+		var panel = $(this);
+		var uid = panel.data('uid');
+		var target = panel.closest('.debug-menu-target');
+
+		//Change the panel wrapper ID.
+		target.attr('id', 'debug-menu-target-puc-' + uid);
+
+		//Change the menu link ID as well and point it at the new target ID.
+		$('#debug-bar-menu').find('.puc-debug-menu-link-' + uid)
+			.closest('.debug-menu-link')
+			.attr('id', 'debug-menu-link-puc-' + uid)
+			.attr('href', '#' + target.attr('id'));
+	});
+});

vendor/yahnis-elsts/plugin-update-checker/languages/plugin-update-checker-ca.po

@@ -0,0 +1,48 @@
+msgid ""
+msgstr ""
+"Project-Id-Version: plugin-update-checker\n"
+"POT-Creation-Date: 2017-11-24 17:02+0200\n"
+"PO-Revision-Date: 2019-09-25 18:15+0200\n"
+"Language-Team: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Generator: Poedit 2.2.3\n"
+"X-Poedit-Basepath: ..\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+"X-Poedit-SourceCharset: UTF-8\n"
+"X-Poedit-KeywordsList: __;_e;_x:1,2c;_x\n"
+"Last-Translator: \n"
+"Language: ca\n"
+"X-Poedit-SearchPath-0: .\n"
+
+#: Puc/v4p3/Plugin/UpdateChecker.php:395
+msgid "Check for updates"
+msgstr "Comprova si hi ha actualitzacions"
+
+#: Puc/v4p3/Plugin/UpdateChecker.php:548
+#, php-format
+msgctxt "the plugin title"
+msgid "The %s plugin is up to date."
+msgstr "L’extensió %s està actualitzada."
+
+#: Puc/v4p3/Plugin/UpdateChecker.php:550
+#, php-format
+msgctxt "the plugin title"
+msgid "A new version of the %s plugin is available."
+msgstr "Una nova versió de l’extensió %s està disponible."
+
+#: Puc/v4p3/Plugin/UpdateChecker.php:552
+#, php-format
+msgctxt "the plugin title"
+msgid "Could not determine if updates are available for %s."
+msgstr "No s’ha pogut determinar si hi ha actualitzacions per a %s."
+
+#: Puc/v4p3/Plugin/UpdateChecker.php:558
+#, php-format
+msgid "Unknown update checker status \"%s\""
+msgstr "Estat del comprovador d’actualitzacions desconegut \"%s\""
+
+#: Puc/v4p3/Vcs/PluginUpdateChecker.php:95
+msgid "There is no changelog available."
+msgstr "No hi ha cap registre de canvis disponible."

vendor/yahnis-elsts/plugin-update-checker/languages/plugin-update-checker-cs_CZ.po

@@ -0,0 +1,45 @@
+msgid ""
+msgstr ""
+"Project-Id-Version: plugin-update-checker\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2017-05-20 10:53+0300\n"
+"PO-Revision-Date: 2017-07-05 15:39+0000\n"
+"Last-Translator: Vojtěch Sajdl <vojtech@sajdl.com>\n"
+"Language-Team: Czech (Czech Republic)\n"
+"Language: cs-CZ\n"
+"Plural-Forms: nplurals=2; plural=(n != 1)\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Loco-Source-Locale: cs_CZ\n"
+"X-Generator: Loco - https://localise.biz/\n"
+"X-Poedit-Basepath: ..\n"
+"X-Poedit-SourceCharset: UTF-8\n"
+"X-Poedit-KeywordsList: __;_e;_x:1,2c;_x\n"
+"X-Poedit-SearchPath-0: .\n"
+"X-Loco-Parser: loco_parse_po"
+
+#: Puc/v4p1/Plugin/UpdateChecker.php:358
+msgid "Check for updates"
+msgstr "Zkontrolovat aktualizace"
+
+#: Puc/v4p1/Plugin/UpdateChecker.php:405
+#, php-format
+msgctxt "the plugin title"
+msgid "The %s plugin is up to date."
+msgstr "Plugin %s je aktuální."
+
+#: Puc/v4p1/Plugin/UpdateChecker.php:407
+#, php-format
+msgctxt "the plugin title"
+msgid "A new version of the %s plugin is available."
+msgstr "Nová verze pluginu %s je dostupná."
+
+#: Puc/v4p1/Plugin/UpdateChecker.php:409
+#, php-format
+msgid "Unknown update checker status \"%s\""
+msgstr "Neznámý status kontroly aktualizací \"%s\""
+
+#: Puc/v4p1/Vcs/PluginUpdateChecker.php:83
+msgid "There is no changelog available."
+msgstr "Changelog není dostupný."

vendor/yahnis-elsts/plugin-update-checker/languages/plugin-update-checker-da_DK.po

@@ -0,0 +1,42 @@
+msgid ""
+msgstr ""
+"Project-Id-Version: plugin-update-checker\n"
+"POT-Creation-Date: 2017-05-20 10:53+0300\n"
+"PO-Revision-Date: 2017-10-17 11:07+0200\n"
+"Last-Translator: Mikk3lRo\n"
+"Language-Team: Mikk3lRo\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Generator: Poedit 2.0.4\n"
+"X-Poedit-Basepath: ..\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+"X-Poedit-SourceCharset: UTF-8\n"
+"X-Poedit-KeywordsList: __;_e;_x:1,2c;_x\n"
+"Language: da_DK\n"
+"X-Poedit-SearchPath-0: .\n"
+
+#: Puc/v4p1/Plugin/UpdateChecker.php:358
+msgid "Check for updates"
+msgstr "Undersøg for opdateringer"
+
+#: Puc/v4p1/Plugin/UpdateChecker.php:405
+#, php-format
+msgctxt "the plugin title"
+msgid "The %s plugin is up to date."
+msgstr "Plugin'et %s er allerede opdateret."
+
+#: Puc/v4p1/Plugin/UpdateChecker.php:407
+#, php-format
+msgctxt "the plugin title"
+msgid "A new version of the %s plugin is available."
+msgstr "En ny version af plugin'et %s er tilgængelig."
+
+#: Puc/v4p1/Plugin/UpdateChecker.php:409
+#, php-format
+msgid "Unknown update checker status \"%s\""
+msgstr "Ukendt opdateringsstatus: \"%s\""
+
+#: Puc/v4p1/Vcs/PluginUpdateChecker.php:83
+msgid "There is no changelog available."
+msgstr "Der er ingen ændringslog tilgængelig."