Merge branch 'update-imagesloaded' into 'dev'

update imagesloaded to version 4.1.4 via composer

See merge request hubzilla/core!1407

36 files changed, 2283 insertions, 57 deletions

diff --git a/vendor/composer/ClassLoader.php b/vendor/composer/ClassLoader.php
index 95f7e0978..fce8549f0 100644
--- a/vendor/composer/ClassLoader.php
+++ b/vendor/composer/ClassLoader.php
@@ -279,7 +279,7 @@ class ClassLoader
      */
     public function setApcuPrefix($apcuPrefix)
     {
-        $this->apcuPrefix = function_exists('apcu_fetch') && ini_get('apc.enabled') ? $apcuPrefix : null;
+        $this->apcuPrefix = function_exists('apcu_fetch') && filter_var(ini_get('apc.enabled'), FILTER_VALIDATE_BOOLEAN) ? $apcuPrefix : null;
     }
 
     /**
diff --git a/vendor/composer/LICENSE b/vendor/composer/LICENSE
index f0157a6ed..f27399a04 100644
--- a/vendor/composer/LICENSE
+++ b/vendor/composer/LICENSE
@@ -1,56 +1,21 @@
-Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
-Upstream-Name: Composer
-Upstream-Contact: Jordi Boggiano <j.boggiano@seld.be>
-Source: https://github.com/composer/composer
 
-Files: *
-Copyright: 2016, Nils Adermann <naderman@naderman.de>
-           2016, Jordi Boggiano <j.boggiano@seld.be>
-License: Expat
+Copyright (c) Nils Adermann, Jordi Boggiano
 
-Files: src/Composer/Util/TlsHelper.php
-Copyright: 2016, Nils Adermann <naderman@naderman.de>
-           2016, Jordi Boggiano <j.boggiano@seld.be>
-           2013, Evan Coury <me@evancoury.com>
-License: Expat and BSD-2-Clause
+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:
 
-License: BSD-2-Clause
- Redistribution and use in source and binary forms, with or without modification,
- are permitted provided that the following conditions are met:
- .
-     * Redistributions of source code must retain the above copyright notice,
-       this list of conditions and the following disclaimer.
- .
-     * 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.
- .
- 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 OWNER 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.
+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.
 
-License: Expat
- 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.
diff --git a/vendor/composer/autoload_classmap.php b/vendor/composer/autoload_classmap.php
index f3c814e02..b7cffc67c 100644
--- a/vendor/composer/autoload_classmap.php
+++ b/vendor/composer/autoload_classmap.php
@@ -981,7 +981,6 @@ return array(
     'Zotlabs\\Module\\Mood' => $baseDir . '/Zotlabs/Module/Mood.php',
     'Zotlabs\\Module\\Network' => $baseDir . '/Zotlabs/Module/Network.php',
     'Zotlabs\\Module\\New_channel' => $baseDir . '/Zotlabs/Module/New_channel.php',
-    'Zotlabs\\Module\\Nojs' => $baseDir . '/Zotlabs/Module/Nojs.php',
     'Zotlabs\\Module\\Notes' => $baseDir . '/Zotlabs/Module/Notes.php',
     'Zotlabs\\Module\\Notifications' => $baseDir . '/Zotlabs/Module/Notifications.php',
     'Zotlabs\\Module\\Notify' => $baseDir . '/Zotlabs/Module/Notify.php',
@@ -1337,7 +1336,10 @@ return array(
     'Zotlabs\\Update\\_1222' => $baseDir . '/Zotlabs/Update/_1222.php',
     'Zotlabs\\Update\\_1223' => $baseDir . '/Zotlabs/Update/_1223.php',
     'Zotlabs\\Update\\_1224' => $baseDir . '/Zotlabs/Update/_1224.php',
-    'Zotlabs\\Web\\CheckJS' => $baseDir . '/Zotlabs/Web/CheckJS.php',
+    'Zotlabs\\Update\\_1225' => $baseDir . '/Zotlabs/Update/_1225.php',
+    'Zotlabs\\Update\\_1226' => $baseDir . '/Zotlabs/Update/_1226.php',
+    'Zotlabs\\Update\\_1227' => $baseDir . '/Zotlabs/Update/_1227.php',
+    'Zotlabs\\Update\\_1228' => $baseDir . '/Zotlabs/Update/_1228.php',
     'Zotlabs\\Web\\Controller' => $baseDir . '/Zotlabs/Web/Controller.php',
     'Zotlabs\\Web\\HTTPHeaders' => $baseDir . '/Zotlabs/Web/HTTPHeaders.php',
     'Zotlabs\\Web\\HTTPSig' => $baseDir . '/Zotlabs/Web/HTTPSig.php',
diff --git a/vendor/composer/autoload_static.php b/vendor/composer/autoload_static.php
index ce0232306..a02571a95 100644
--- a/vendor/composer/autoload_static.php
+++ b/vendor/composer/autoload_static.php
@@ -1149,7 +1149,6 @@ class ComposerStaticInit7b34d7e50a62201ec5d5e526a5b8b35d
         'Zotlabs\\Module\\Mood' => __DIR__ . '/../..' . '/Zotlabs/Module/Mood.php',
         'Zotlabs\\Module\\Network' => __DIR__ . '/../..' . '/Zotlabs/Module/Network.php',
         'Zotlabs\\Module\\New_channel' => __DIR__ . '/../..' . '/Zotlabs/Module/New_channel.php',
-        'Zotlabs\\Module\\Nojs' => __DIR__ . '/../..' . '/Zotlabs/Module/Nojs.php',
         'Zotlabs\\Module\\Notes' => __DIR__ . '/../..' . '/Zotlabs/Module/Notes.php',
         'Zotlabs\\Module\\Notifications' => __DIR__ . '/../..' . '/Zotlabs/Module/Notifications.php',
         'Zotlabs\\Module\\Notify' => __DIR__ . '/../..' . '/Zotlabs/Module/Notify.php',
@@ -1506,7 +1505,9 @@ class ComposerStaticInit7b34d7e50a62201ec5d5e526a5b8b35d
         'Zotlabs\\Update\\_1223' => __DIR__ . '/../..' . '/Zotlabs/Update/_1223.php',
         'Zotlabs\\Update\\_1224' => __DIR__ . '/../..' . '/Zotlabs/Update/_1224.php',
         'Zotlabs\\Update\\_1225' => __DIR__ . '/../..' . '/Zotlabs/Update/_1225.php',
-        'Zotlabs\\Web\\CheckJS' => __DIR__ . '/../..' . '/Zotlabs/Web/CheckJS.php',
+        'Zotlabs\\Update\\_1226' => __DIR__ . '/../..' . '/Zotlabs/Update/_1226.php',
+        'Zotlabs\\Update\\_1227' => __DIR__ . '/../..' . '/Zotlabs/Update/_1227.php',
+        'Zotlabs\\Update\\_1228' => __DIR__ . '/../..' . '/Zotlabs/Update/_1228.php',
         'Zotlabs\\Web\\Controller' => __DIR__ . '/../..' . '/Zotlabs/Web/Controller.php',
         'Zotlabs\\Web\\HTTPHeaders' => __DIR__ . '/../..' . '/Zotlabs/Web/HTTPHeaders.php',
         'Zotlabs\\Web\\HTTPSig' => __DIR__ . '/../..' . '/Zotlabs/Web/HTTPSig.php',
diff --git a/vendor/composer/installed.json b/vendor/composer/installed.json
index af845828e..b9c998f12 100644
--- a/vendor/composer/installed.json
+++ b/vendor/composer/installed.json
@@ -163,6 +163,47 @@
         "description": "Internationalization library powered by CLDR data."
     },
     {
+        "name": "desandro/imagesloaded",
+        "version": "v4.1.4",
+        "version_normalized": "4.1.4.0",
+        "source": {
+            "type": "git",
+            "url": "https://github.com/desandro/imagesloaded.git",
+            "reference": "67c4e57453120935180c45c6820e7d3fbd2ea1f9"
+        },
+        "dist": {
+            "type": "zip",
+            "url": "https://api.github.com/repos/desandro/imagesloaded/zipball/67c4e57453120935180c45c6820e7d3fbd2ea1f9",
+            "reference": "67c4e57453120935180c45c6820e7d3fbd2ea1f9",
+            "shasum": ""
+        },
+        "time": "2018-01-02T16:53:35+00:00",
+        "type": "component",
+        "installation-source": "dist",
+        "notification-url": "https://packagist.org/downloads/",
+        "license": [
+            "MIT"
+        ],
+        "authors": [
+            {
+                "name": "David DeSandro",
+                "homepage": "http://desandro.com/",
+                "role": "developer"
+            }
+        ],
+        "description": "JavaScript is all like _You images done yet or what?_",
+        "homepage": "http://imagesloaded.desandro.com",
+        "keywords": [
+            "dom",
+            "images",
+            "javascript",
+            "jquery-plugin",
+            "library",
+            "loaded",
+            "ui"
+        ]
+    },
+    {
         "name": "ezyang/htmlpurifier",
         "version": "v4.10.0",
         "version_normalized": "4.10.0.0",
diff --git a/vendor/desandro/imagesloaded/.gitignore b/vendor/desandro/imagesloaded/.gitignore
new file mode 100644
index 000000000..2486eb53d
--- /dev/null
+++ b/vendor/desandro/imagesloaded/.gitignore
@@ -0,0 +1,5 @@
+bower_components/
+node_modules/
+_site/
+build/
+package-lock.json
diff --git a/vendor/desandro/imagesloaded/.jshintrc b/vendor/desandro/imagesloaded/.jshintrc
new file mode 100644
index 000000000..78aa4af7b
--- /dev/null
+++ b/vendor/desandro/imagesloaded/.jshintrc
@@ -0,0 +1,12 @@
+{
+  "browser": true,
+  "curly": true,
+  "newcap": false,
+  "strict": true,
+  "undef": true,
+  "unused": true,
+  "globals": {
+    "imagesLoaded": false,
+    "QUnit": false
+  }
+}
diff --git a/vendor/desandro/imagesloaded/README.md b/vendor/desandro/imagesloaded/README.md
new file mode 100644
index 000000000..67b799dfd
--- /dev/null
+++ b/vendor/desandro/imagesloaded/README.md
@@ -0,0 +1,362 @@
+# imagesLoaded
+
+<p class="tagline">JavaScript is all like "You images done yet or what?"</p>
+
+[imagesloaded.desandro.com](http://imagesloaded.desandro.com)
+
+Detect when images have been loaded.
+
+## Install
+
+### Download
+
++ [imagesloaded.pkgd.min.js](https://unpkg.com/imagesloaded@4/imagesloaded.pkgd.min.js) minified
++ [imagesloaded.pkgd.js](https://unpkg.com/imagesloaded@4/imagesloaded.pkgd.js) un-minified
+
+### CDN
+
+``` html
+<script src="https://unpkg.com/imagesloaded@4/imagesloaded.pkgd.min.js"></script>
+<!-- or -->
+<script src="https://unpkg.com/imagesloaded@4/imagesloaded.pkgd.js"></script>
+```
+
+### Package managers
+
+Install via [npm](https://www.npmjs.com/package/imagesloaded): `npm install imagesloaded`
+
+Install via [Bower](http://bower.io): `bower install imagesloaded --save`
+
+## jQuery
+
+You can use imagesLoaded as a jQuery Plugin.
+
+``` js
+$('#container').imagesLoaded( function() {
+  // images have loaded
+});
+
+// options
+$('#container').imagesLoaded( {
+  // options...
+  },
+  function() {
+    // images have loaded
+  }
+);
+```
+
+`.imagesLoaded()` returns a [jQuery Deferred object](http://api.jquery.com/category/deferred-object/). This allows you to use `.always()`, `.done()`, `.fail()` and `.progress()`.
+
+``` js
+$('#container').imagesLoaded()
+  .always( function( instance ) {
+    console.log('all images loaded');
+  })
+  .done( function( instance ) {
+    console.log('all images successfully loaded');
+  })
+  .fail( function() {
+    console.log('all images loaded, at least one is broken');
+  })
+  .progress( function( instance, image ) {
+    var result = image.isLoaded ? 'loaded' : 'broken';
+    console.log( 'image is ' + result + ' for ' + image.img.src );
+  });
+```
+
+## Vanilla JavaScript
+
+You can use imagesLoaded with vanilla JS.
+
+``` js
+imagesLoaded( elem, callback )
+// options
+imagesLoaded( elem, options, callback )
+// you can use `new` if you like
+new imagesLoaded( elem, callback )
+```
+
++ `elem` _Element, NodeList, Array, or Selector String_
++ `options` _Object_
++ `callback` _Function_ - function triggered after all images have been loaded
+
+Using a callback function is the same as binding it to the `always` event (see below).
+
+``` js
+// element
+imagesLoaded( document.querySelector('#container'), function( instance ) {
+  console.log('all images are loaded');
+});
+// selector string
+imagesLoaded( '#container', function() {...});
+// multiple elements
+var posts = document.querySelectorAll('.post');
+imagesLoaded( posts, function() {...});
+```
+
+Bind events with vanilla JS with .on(), .off(), and .once() methods.
+
+``` js
+var imgLoad = imagesLoaded( elem );
+function onAlways( instance ) {
+  console.log('all images are loaded');
+}
+// bind with .on()
+imgLoad.on( 'always', onAlways );
+// unbind with .off()
+imgLoad.off( 'always', onAlways );
+```
+
+## Background
+
+Detect when background images have loaded, in addition to `<img>`s.
+
+Set `{ background: true }` to detect when the element's background image has loaded.
+
+``` js
+// jQuery
+$('#container').imagesLoaded( { background: true }, function() {
+  console.log('#container background image loaded');
+});
+
+// vanilla JS
+imagesLoaded( '#container', { background: true }, function() {
+  console.log('#container background image loaded');
+});
+```
+
+[See jQuery demo](http://codepen.io/desandro/pen/pjVMPB) or [vanilla JS demo](http://codepen.io/desandro/pen/avKooW) on CodePen.
+
+Set to a selector string like `{ background: '.item' }` to detect when the background images of child elements have loaded.
+
+``` js
+// jQuery
+$('#container').imagesLoaded( { background: '.item' }, function() {
+  console.log('all .item background images loaded');
+});
+
+// vanilla JS
+imagesLoaded( '#container', { background: '.item' }, function() {
+  console.log('all .item background images loaded');
+});
+```
+
+[See jQuery demo](http://codepen.io/desandro/pen/avKoZL) or [vanilla JS demo](http://codepen.io/desandro/pen/vNrBGz) on CodePen.
+
+## Events
+
+### always
+
+``` js
+// jQuery
+$('#container').imagesLoaded().always( function( instance ) {
+  console.log('ALWAYS - all images have been loaded');
+});
+
+// vanilla JS
+imgLoad.on( 'always', function( instance ) {
+  console.log('ALWAYS - all images have been loaded');
+});
+```
+
+Triggered after all images have been either loaded or confirmed broken.
+
++ `instance` _imagesLoaded_ - the imagesLoaded instance
+
+### done
+
+``` js
+// jQuery
+$('#container').imagesLoaded().done( function( instance ) {
+  console.log('DONE  - all images have been successfully loaded');
+});
+
+// vanilla JS
+imgLoad.on( 'done', function( instance ) {
+  console.log('DONE  - all images have been successfully loaded');
+});
+```
+
+Triggered after all images have successfully loaded without any broken images.
+
+### fail
+
+``` js
+$('#container').imagesLoaded().fail( function( instance ) {
+  console.log('FAIL - all images loaded, at least one is broken');
+});
+
+// vanilla JS
+imgLoad.on( 'fail', function( instance ) {
+  console.log('FAIL - all images loaded, at least one is broken');
+});
+```
+
+Triggered after all images have been loaded with at least one broken image.
+
+### progress
+
+``` js
+imgLoad.on( 'progress', function( instance, image ) {
+  var result = image.isLoaded ? 'loaded' : 'broken';
+  console.log( 'image is ' + result + ' for ' + image.img.src );
+});
+```
+
+Triggered after each image has been loaded.
+
++ `instance` _imagesLoaded_ - the imagesLoaded instance
++ `image` _LoadingImage_ - the LoadingImage instance of the loaded image
+
+<!-- sponsored -->
+
+## Properties
+
+### LoadingImage.img
+
+_Image_ - The `img` element
+
+### LoadingImage.isLoaded
+
+_Boolean_ - `true` when the image has successfully loaded
+
+### imagesLoaded.images
+
+Array of _LoadingImage_ instances for each image detected
+
+``` js
+var imgLoad = imagesLoaded('#container');
+imgLoad.on( 'always', function() {
+  console.log( imgLoad.images.length + ' images loaded' );
+  // detect which image is broken
+  for ( var i = 0, len = imgLoad.images.length; i < len; i++ ) {
+    var image = imgLoad.images[i];
+    var result = image.isLoaded ? 'loaded' : 'broken';
+    console.log( 'image is ' + result + ' for ' + image.img.src );
+  }
+});
+```
+
+## Browserify
+
+imagesLoaded works with [Browserify](http://browserify.org/).
+
+``` bash
+npm install imagesloaded --save
+```
+
+``` js
+var imagesLoaded = require('imagesloaded');
+
+imagesLoaded( elem, function() {...} );
+```
+
+Use `.makeJQueryPlugin` to make to use `.imagesLoaded()` jQuery plugin.
+
+``` js
+var $ = require('jquery');
+var imagesLoaded = require('imagesloaded');
+
+// provide jQuery argument
+imagesLoaded.makeJQueryPlugin( $ );
+// now use .imagesLoaded() jQuery plugin
+$('#container').imagesLoaded( function() {...});
+```
+
+## Webpack
+
+Install imagesLoaded with npm.
+
+``` bash
+npm install imagesloaded
+```
+
+You can then `require('imagesloaded')`.
+
+``` js
+// main.js
+var imagesLoaded = require('imagesloaded');
+
+imagesLoaded( '#container', function() {
+  // images have loaded
+});
+```
+
+Use `.makeJQueryPlugin` to make `.imagesLoaded()` jQuery plugin.
+
+``` js
+// main.js
+var imagesLoaded = require('imagesloaded');
+var $ = require('jquery');
+
+// provide jQuery argument
+imagesLoaded.makeJQueryPlugin( $ );
+// now use .imagesLoaded() jQuery plugin
+$('#container').imagesLoaded( function() {...});
+```
+
+Run webpack.
+
+``` bash
+webpack main.js bundle.js
+```
+
+## RequireJS
+
+imagesLoaded works with [RequireJS](http://requirejs.org).
+
+You can require [imagesloaded.pkgd.js](http://imagesloaded.desandro.com/imagesloaded.pkgd.js).
+
+``` js
+requirejs( [
+  'path/to/imagesloaded.pkgd.js',
+], function( imagesLoaded ) {
+  imagesLoaded( '#container', function() { ... });
+});
+```
+
+Use `.makeJQueryPlugin` to make `.imagesLoaded()` jQuery plugin.
+
+``` js
+requirejs( [
+  'jquery',
+  'path/to/imagesloaded.pkgd.js',
+], function( $, imagesLoaded ) {
+  // provide jQuery argument
+  imagesLoaded.makeJQueryPlugin( $ );
+  // now use .imagesLoaded() jQuery plugin
+  $('#container').imagesLoaded( function() {...});
+});
+```
+
+You can manage dependencies with [Bower](http://bower.io). Set `baseUrl` to `bower_components` and set a path config for all your application code.
+
+``` js
+requirejs.config({
+  baseUrl: 'bower_components/',
+  paths: { // path to your app
+    app: '../'
+  }
+});
+
+requirejs( [
+  'imagesloaded/imagesloaded',
+  'app/my-component.js'
+], function( imagesLoaded, myComp ) {
+  imagesLoaded( '#container', function() { ... });
+});
+```
+
+## Browser support
+
++ IE9+
++ Android 2.3+
++ iOS Safari 4+
++ All other modern browsers
+
+Use [imagesLoaded v3](http://imagesloaded.desandro.com/v3/) for IE8 support.
+
+## MIT License
+
+imagesLoaded is released under the [MIT License](http://desandro.mit-license.org/). Have at it.
diff --git a/vendor/desandro/imagesloaded/bower.json b/vendor/desandro/imagesloaded/bower.json
new file mode 100644
index 000000000..795c69f07
--- /dev/null
+++ b/vendor/desandro/imagesloaded/bower.json
@@ -0,0 +1,37 @@
+{
+  "name": "imagesloaded",
+  "description": "JavaScript is all like _You images done yet or what?_",
+  "main": "imagesloaded.js",
+  "dependencies": {
+    "ev-emitter": "^1.0.0"
+  },
+  "devDependencies": {
+    "jquery": ">=1.9 <4.0",
+    "qunit": "^2.0.0"
+  },
+  "ignore": [
+    "**/.*",
+    "test",
+    "package.json",
+    "composer.json",
+    "node_modules",
+    "bower_components",
+    "tests",
+    "sandbox/",
+    "gulpfile.js",
+    "contributing.md"
+  ],
+  "homepage": "http://imagesloaded.desandro.com",
+  "authors": [
+    "David DeSandro"
+  ],
+  "moduleType": [
+    "amd",
+    "globals",
+    "node"
+  ],
+  "keywords": [
+    "images"
+  ],
+  "license": "MIT"
+}
diff --git a/vendor/desandro/imagesloaded/composer.json b/vendor/desandro/imagesloaded/composer.json
new file mode 100644
index 000000000..95ba64c4a
--- /dev/null
+++ b/vendor/desandro/imagesloaded/composer.json
@@ -0,0 +1,15 @@
+{
+  "name": "desandro/imagesloaded",
+  "description": "JavaScript is all like _You images done yet or what?_",
+  "type": "component",
+  "keywords": ["javascript", "library", "images", "loaded", "dom", "ui", "jquery-plugin"],
+  "homepage": "http://imagesloaded.desandro.com",
+  "license": "MIT",
+  "authors": [
+    {
+      "name": "David DeSandro",
+      "homepage": "http://desandro.com/",
+      "role": "developer"
+    }
+  ]
+}
diff --git a/vendor/desandro/imagesloaded/contributing.md b/vendor/desandro/imagesloaded/contributing.md
new file mode 100644
index 000000000..acac280cc
--- /dev/null
+++ b/vendor/desandro/imagesloaded/contributing.md
@@ -0,0 +1,20 @@
+## Submitting issues
+
+### Reduced test case required
+
+All bug reports and problem issues require a [**reduced test case**](http://css-tricks.com/reduced-test-cases/).
+
++ A reduced test case clearly demonstrates the bug or issue.
++ It contains the bare minimum HTML, CSS, and JavaScript required to demonstrate the bug.
++ A link to your production site is **not** a reduced test case.
+
+Create a test case by forking a [CodePen demos](http://codepen.io/desandro/pens/tags/?selected_tag=imagesloaded-docs).
+
++ [progress with jQuery](http://codepen.io/desandro/pen/bIFyl)
++ [progress with vanilla JS](http://codepen.io/desandro/pen/hlzaw)
++ [`{ background: true }` with jQuery](http://codepen.io/desandro/pen/pjVMPB)
++ [`{ background: true }` with vanilla JS](http://codepen.io/desandro/pen/avKooW)
++ [`{ background: '.selector' }` with jQuery](http://codepen.io/desandro/pen/avKoZL)
++ [`{ background: '.selector' }` with vanilla JS](http://codepen.io/desandro/pen/vNrBGz)
+
+Providing a reduced test case is the best way to get your issue addressed. They help you point out the problem. They help me verify and debug the problem. They help others understand the problem. Without a reduced test case, your issue may be closed.
diff --git a/vendor/desandro/imagesloaded/gulpfile.js b/vendor/desandro/imagesloaded/gulpfile.js
new file mode 100644
index 000000000..66f775f3d
--- /dev/null
+++ b/vendor/desandro/imagesloaded/gulpfile.js
@@ -0,0 +1,128 @@
+/*jshint node: true, strict: false */
+
+var fs = require('fs');
+var gulp = require('gulp');
+var rename = require('gulp-rename');
+var replace = require('gulp-replace');
+
+// ----- hint ----- //
+
+var jshint = require('gulp-jshint');
+
+gulp.task( 'hint-js', function() {
+  return gulp.src('imagesloaded.js')
+    .pipe( jshint() )
+    .pipe( jshint.reporter('default') );
+});
+
+gulp.task( 'hint-test', function() {
+  return gulp.src('test/unit/*.js')
+    .pipe( jshint() )
+    .pipe( jshint.reporter('default') );
+});
+
+gulp.task( 'hint-task', function() {
+  return gulp.src('gulpfile.js')
+    .pipe( jshint() )
+    .pipe( jshint.reporter('default') );
+});
+
+var jsonlint = require('gulp-json-lint');
+
+gulp.task( 'jsonlint', function() {
+  return gulp.src( '*.json' )
+    .pipe( jsonlint() )
+    .pipe( jsonlint.report('verbose') );
+}); 
+
+gulp.task( 'hint', [ 'hint-js', 'hint-test', 'hint-task', 'jsonlint' ]);
+
+// -------------------------- RequireJS makes pkgd -------------------------- //
+
+// refactored from gulp-requirejs-optimize
+// https://www.npmjs.com/package/gulp-requirejs-optimize/
+
+var gutil = require('gulp-util');
+var chalk = require('chalk');
+var rjsOptimize = require('gulp-requirejs-optimize');
+
+// regex for banner comment
+var reBannerComment = new RegExp('^\\s*(?:\\/\\*[\\s\\S]*?\\*\\/)\\s*');
+
+function getBanner() {
+  var src = fs.readFileSync( 'imagesloaded.js', 'utf8' );
+  var matches = src.match( reBannerComment );
+  var banner = matches[0].replace( 'imagesLoaded', 'imagesLoaded PACKAGED' );
+  return banner;
+}
+
+function addBanner( str ) {
+  return replace( /^/, str );
+}
+
+gulp.task( 'requirejs', function() {
+  var banner = getBanner();
+  // HACK src is not needed
+  // should refactor rjsOptimize to produce src
+  return gulp.src('imagesloaded.js')
+    .pipe( rjsOptimize({
+      baseUrl: 'bower_components',
+      optimize: 'none',
+      include: [
+        '../imagesloaded'
+      ]
+    }) )
+    // remove named module
+    .pipe( replace( "'../imagesloaded',", '' ) )
+    // add banner
+    .pipe( addBanner( banner ) )
+    .pipe( rename('imagesloaded.pkgd.js') )
+    .pipe( gulp.dest('.') );
+});
+
+
+// ----- uglify ----- //
+
+var uglify = require('gulp-uglify');
+
+gulp.task( 'uglify', [ 'requirejs' ], function() {
+  var banner = getBanner();
+  gulp.src('imagesloaded.pkgd.js')
+    .pipe( uglify() )
+    // add banner
+    .pipe( addBanner( banner ) )
+    .pipe( rename('imagesloaded.pkgd.min.js') )
+    .pipe( gulp.dest('.') );
+});
+
+// ----- version ----- //
+
+// set version in source files
+
+var minimist = require('minimist');
+
+// use gulp version -t 1.2.3
+gulp.task( 'version', function() {
+  var args = minimist( process.argv.slice(3) );
+  var version = args.t;
+  if ( !version || !/\d+\.\d+\.\d+/.test( version ) ) {
+    gutil.log( 'invalid version: ' + chalk.red( version ) );
+    return;
+  }
+  gutil.log( 'ticking version to ' + chalk.green( version ) );
+
+  gulp.src('imagesloaded.js')
+    .pipe( replace( /imagesLoaded v\d+\.\d+\.\d+/, 'imagesLoaded v' + version ) )
+    .pipe( gulp.dest('.') );
+
+  gulp.src( [ 'bower.json', 'package.json' ] )
+    .pipe( replace( /"version": "\d+\.\d+\.\d+"/, '"version": "' + version + '"' ) )
+    .pipe( gulp.dest('.') );
+});
+
+// ----- default ----- //
+
+gulp.task( 'default', [
+  'hint',
+  'uglify'
+]);
diff --git a/vendor/desandro/imagesloaded/imagesloaded.js b/vendor/desandro/imagesloaded/imagesloaded.js
new file mode 100644
index 000000000..f527a71e9
--- /dev/null
+++ b/vendor/desandro/imagesloaded/imagesloaded.js
@@ -0,0 +1,377 @@
+/*!
+ * imagesLoaded v4.1.4
+ * JavaScript is all like "You images are done yet or what?"
+ * MIT License
+ */
+
+( function( window, factory ) { 'use strict';
+  // universal module definition
+
+  /*global define: false, module: false, require: false */
+
+  if ( typeof define == 'function' && define.amd ) {
+    // AMD
+    define( [
+      'ev-emitter/ev-emitter'
+    ], function( EvEmitter ) {
+      return factory( window, EvEmitter );
+    });
+  } else if ( typeof module == 'object' && module.exports ) {
+    // CommonJS
+    module.exports = factory(
+      window,
+      require('ev-emitter')
+    );
+  } else {
+    // browser global
+    window.imagesLoaded = factory(
+      window,
+      window.EvEmitter
+    );
+  }
+
+})( typeof window !== 'undefined' ? window : this,
+
+// --------------------------  factory -------------------------- //
+
+function factory( window, EvEmitter ) {
+
+'use strict';
+
+var $ = window.jQuery;
+var console = window.console;
+
+// -------------------------- helpers -------------------------- //
+
+// extend objects
+function extend( a, b ) {
+  for ( var prop in b ) {
+    a[ prop ] = b[ prop ];
+  }
+  return a;
+}
+
+var arraySlice = Array.prototype.slice;
+
+// turn element or nodeList into an array
+function makeArray( obj ) {
+  if ( Array.isArray( obj ) ) {
+    // use object if already an array
+    return obj;
+  }
+
+  var isArrayLike = typeof obj == 'object' && typeof obj.length == 'number';
+  if ( isArrayLike ) {
+    // convert nodeList to array
+    return arraySlice.call( obj );
+  }
+
+  // array of single index
+  return [ obj ];
+}
+
+// -------------------------- imagesLoaded -------------------------- //
+
+/**
+ * @param {Array, Element, NodeList, String} elem
+ * @param {Object or Function} options - if function, use as callback
+ * @param {Function} onAlways - callback function
+ */
+function ImagesLoaded( elem, options, onAlways ) {
+  // coerce ImagesLoaded() without new, to be new ImagesLoaded()
+  if ( !( this instanceof ImagesLoaded ) ) {
+    return new ImagesLoaded( elem, options, onAlways );
+  }
+  // use elem as selector string
+  var queryElem = elem;
+  if ( typeof elem == 'string' ) {
+    queryElem = document.querySelectorAll( elem );
+  }
+  // bail if bad element
+  if ( !queryElem ) {
+    console.error( 'Bad element for imagesLoaded ' + ( queryElem || elem ) );
+    return;
+  }
+
+  this.elements = makeArray( queryElem );
+  this.options = extend( {}, this.options );
+  // shift arguments if no options set
+  if ( typeof options == 'function' ) {
+    onAlways = options;
+  } else {
+    extend( this.options, options );
+  }
+
+  if ( onAlways ) {
+    this.on( 'always', onAlways );
+  }
+
+  this.getImages();
+
+  if ( $ ) {
+    // add jQuery Deferred object
+    this.jqDeferred = new $.Deferred();
+  }
+
+  // HACK check async to allow time to bind listeners
+  setTimeout( this.check.bind( this ) );
+}
+
+ImagesLoaded.prototype = Object.create( EvEmitter.prototype );
+
+ImagesLoaded.prototype.options = {};
+
+ImagesLoaded.prototype.getImages = function() {
+  this.images = [];
+
+  // filter & find items if we have an item selector
+  this.elements.forEach( this.addElementImages, this );
+};
+
+/**
+ * @param {Node} element
+ */
+ImagesLoaded.prototype.addElementImages = function( elem ) {
+  // filter siblings
+  if ( elem.nodeName == 'IMG' ) {
+    this.addImage( elem );
+  }
+  // get background image on element
+  if ( this.options.background === true ) {
+    this.addElementBackgroundImages( elem );
+  }
+
+  // find children
+  // no non-element nodes, #143
+  var nodeType = elem.nodeType;
+  if ( !nodeType || !elementNodeTypes[ nodeType ] ) {
+    return;
+  }
+  var childImgs = elem.querySelectorAll('img');
+  // concat childElems to filterFound array
+  for ( var i=0; i < childImgs.length; i++ ) {
+    var img = childImgs[i];
+    this.addImage( img );
+  }
+
+  // get child background images
+  if ( typeof this.options.background == 'string' ) {
+    var children = elem.querySelectorAll( this.options.background );
+    for ( i=0; i < children.length; i++ ) {
+      var child = children[i];
+      this.addElementBackgroundImages( child );
+    }
+  }
+};
+
+var elementNodeTypes = {
+  1: true,
+  9: true,
+  11: true
+};
+
+ImagesLoaded.prototype.addElementBackgroundImages = function( elem ) {
+  var style = getComputedStyle( elem );
+  if ( !style ) {
+    // Firefox returns null if in a hidden iframe https://bugzil.la/548397
+    return;
+  }
+  // get url inside url("...")
+  var reURL = /url\((['"])?(.*?)\1\)/gi;
+  var matches = reURL.exec( style.backgroundImage );
+  while ( matches !== null ) {
+    var url = matches && matches[2];
+    if ( url ) {
+      this.addBackground( url, elem );
+    }
+    matches = reURL.exec( style.backgroundImage );
+  }
+};
+
+/**
+ * @param {Image} img
+ */
+ImagesLoaded.prototype.addImage = function( img ) {
+  var loadingImage = new LoadingImage( img );
+  this.images.push( loadingImage );
+};
+
+ImagesLoaded.prototype.addBackground = function( url, elem ) {
+  var background = new Background( url, elem );
+  this.images.push( background );
+};
+
+ImagesLoaded.prototype.check = function() {
+  var _this = this;
+  this.progressedCount = 0;
+  this.hasAnyBroken = false;
+  // complete if no images
+  if ( !this.images.length ) {
+    this.complete();
+    return;
+  }
+
+  function onProgress( image, elem, message ) {
+    // HACK - Chrome triggers event before object properties have changed. #83
+    setTimeout( function() {
+      _this.progress( image, elem, message );
+    });
+  }
+
+  this.images.forEach( function( loadingImage ) {
+    loadingImage.once( 'progress', onProgress );
+    loadingImage.check();
+  });
+};
+
+ImagesLoaded.prototype.progress = function( image, elem, message ) {
+  this.progressedCount++;
+  this.hasAnyBroken = this.hasAnyBroken || !image.isLoaded;
+  // progress event
+  this.emitEvent( 'progress', [ this, image, elem ] );
+  if ( this.jqDeferred && this.jqDeferred.notify ) {
+    this.jqDeferred.notify( this, image );
+  }
+  // check if completed
+  if ( this.progressedCount == this.images.length ) {
+    this.complete();
+  }
+
+  if ( this.options.debug && console ) {
+    console.log( 'progress: ' + message, image, elem );
+  }
+};
+
+ImagesLoaded.prototype.complete = function() {
+  var eventName = this.hasAnyBroken ? 'fail' : 'done';
+  this.isComplete = true;
+  this.emitEvent( eventName, [ this ] );
+  this.emitEvent( 'always', [ this ] );
+  if ( this.jqDeferred ) {
+    var jqMethod = this.hasAnyBroken ? 'reject' : 'resolve';
+    this.jqDeferred[ jqMethod ]( this );
+  }
+};
+
+// --------------------------  -------------------------- //
+
+function LoadingImage( img ) {
+  this.img = img;
+}
+
+LoadingImage.prototype = Object.create( EvEmitter.prototype );
+
+LoadingImage.prototype.check = function() {
+  // If complete is true and browser supports natural sizes,
+  // try to check for image status manually.
+  var isComplete = this.getIsImageComplete();
+  if ( isComplete ) {
+    // report based on naturalWidth
+    this.confirm( this.img.naturalWidth !== 0, 'naturalWidth' );
+    return;
+  }
+
+  // If none of the checks above matched, simulate loading on detached element.
+  this.proxyImage = new Image();
+  this.proxyImage.addEventListener( 'load', this );
+  this.proxyImage.addEventListener( 'error', this );
+  // bind to image as well for Firefox. #191
+  this.img.addEventListener( 'load', this );
+  this.img.addEventListener( 'error', this );
+  this.proxyImage.src = this.img.src;
+};
+
+LoadingImage.prototype.getIsImageComplete = function() {
+  // check for non-zero, non-undefined naturalWidth
+  // fixes Safari+InfiniteScroll+Masonry bug infinite-scroll#671
+  return this.img.complete && this.img.naturalWidth;
+};
+
+LoadingImage.prototype.confirm = function( isLoaded, message ) {
+  this.isLoaded = isLoaded;
+  this.emitEvent( 'progress', [ this, this.img, message ] );
+};
+
+// ----- events ----- //
+
+// trigger specified handler for event type
+LoadingImage.prototype.handleEvent = function( event ) {
+  var method = 'on' + event.type;
+  if ( this[ method ] ) {
+    this[ method ]( event );
+  }
+};
+
+LoadingImage.prototype.onload = function() {
+  this.confirm( true, 'onload' );
+  this.unbindEvents();
+};
+
+LoadingImage.prototype.onerror = function() {
+  this.confirm( false, 'onerror' );
+  this.unbindEvents();
+};
+
+LoadingImage.prototype.unbindEvents = function() {
+  this.proxyImage.removeEventListener( 'load', this );
+  this.proxyImage.removeEventListener( 'error', this );
+  this.img.removeEventListener( 'load', this );
+  this.img.removeEventListener( 'error', this );
+};
+
+// -------------------------- Background -------------------------- //
+
+function Background( url, element ) {
+  this.url = url;
+  this.element = element;
+  this.img = new Image();
+}
+
+// inherit LoadingImage prototype
+Background.prototype = Object.create( LoadingImage.prototype );
+
+Background.prototype.check = function() {
+  this.img.addEventListener( 'load', this );
+  this.img.addEventListener( 'error', this );
+  this.img.src = this.url;
+  // check if image is already complete
+  var isComplete = this.getIsImageComplete();
+  if ( isComplete ) {
+    this.confirm( this.img.naturalWidth !== 0, 'naturalWidth' );
+    this.unbindEvents();
+  }
+};
+
+Background.prototype.unbindEvents = function() {
+  this.img.removeEventListener( 'load', this );
+  this.img.removeEventListener( 'error', this );
+};
+
+Background.prototype.confirm = function( isLoaded, message ) {
+  this.isLoaded = isLoaded;
+  this.emitEvent( 'progress', [ this, this.element, message ] );
+};
+
+// -------------------------- jQuery -------------------------- //
+
+ImagesLoaded.makeJQueryPlugin = function( jQuery ) {
+  jQuery = jQuery || window.jQuery;
+  if ( !jQuery ) {
+    return;
+  }
+  // set local variable
+  $ = jQuery;
+  // $().imagesLoaded()
+  $.fn.imagesLoaded = function( options, callback ) {
+    var instance = new ImagesLoaded( this, options, callback );
+    return instance.jqDeferred.promise( $(this) );
+  };
+};
+// try making plugin
+ImagesLoaded.makeJQueryPlugin();
+
+// --------------------------  -------------------------- //
+
+return ImagesLoaded;
+
+});
diff --git a/vendor/desandro/imagesloaded/imagesloaded.pkgd.js b/vendor/desandro/imagesloaded/imagesloaded.pkgd.js
new file mode 100644
index 000000000..a230750b3
--- /dev/null
+++ b/vendor/desandro/imagesloaded/imagesloaded.pkgd.js
@@ -0,0 +1,497 @@
+/*!
+ * imagesLoaded PACKAGED v4.1.4
+ * JavaScript is all like "You images are done yet or what?"
+ * MIT License
+ */
+
+/**
+ * EvEmitter v1.1.0
+ * Lil' event emitter
+ * MIT License
+ */
+
+/* jshint unused: true, undef: true, strict: true */
+
+( function( global, factory ) {
+  // universal module definition
+  /* jshint strict: false */ /* globals define, module, window */
+  if ( typeof define == 'function' && define.amd ) {
+    // AMD - RequireJS
+    define( 'ev-emitter/ev-emitter',factory );
+  } else if ( typeof module == 'object' && module.exports ) {
+    // CommonJS - Browserify, Webpack
+    module.exports = factory();
+  } else {
+    // Browser globals
+    global.EvEmitter = factory();
+  }
+
+}( typeof window != 'undefined' ? window : this, function() {
+
+
+
+function EvEmitter() {}
+
+var proto = EvEmitter.prototype;
+
+proto.on = function( eventName, listener ) {
+  if ( !eventName || !listener ) {
+    return;
+  }
+  // set events hash
+  var events = this._events = this._events || {};
+  // set listeners array
+  var listeners = events[ eventName ] = events[ eventName ] || [];
+  // only add once
+  if ( listeners.indexOf( listener ) == -1 ) {
+    listeners.push( listener );
+  }
+
+  return this;
+};
+
+proto.once = function( eventName, listener ) {
+  if ( !eventName || !listener ) {
+    return;
+  }
+  // add event
+  this.on( eventName, listener );
+  // set once flag
+  // set onceEvents hash
+  var onceEvents = this._onceEvents = this._onceEvents || {};
+  // set onceListeners object
+  var onceListeners = onceEvents[ eventName ] = onceEvents[ eventName ] || {};
+  // set flag
+  onceListeners[ listener ] = true;
+
+  return this;
+};
+
+proto.off = function( eventName, listener ) {
+  var listeners = this._events && this._events[ eventName ];
+  if ( !listeners || !listeners.length ) {
+    return;
+  }
+  var index = listeners.indexOf( listener );
+  if ( index != -1 ) {
+    listeners.splice( index, 1 );
+  }
+
+  return this;
+};
+
+proto.emitEvent = function( eventName, args ) {
+  var listeners = this._events && this._events[ eventName ];
+  if ( !listeners || !listeners.length ) {
+    return;
+  }
+  // copy over to avoid interference if .off() in listener
+  listeners = listeners.slice(0);
+  args = args || [];
+  // once stuff
+  var onceListeners = this._onceEvents && this._onceEvents[ eventName ];
+
+  for ( var i=0; i < listeners.length; i++ ) {
+    var listener = listeners[i]
+    var isOnce = onceListeners && onceListeners[ listener ];
+    if ( isOnce ) {
+      // remove listener
+      // remove before trigger to prevent recursion
+      this.off( eventName, listener );
+      // unset once flag
+      delete onceListeners[ listener ];
+    }
+    // trigger listener
+    listener.apply( this, args );
+  }
+
+  return this;
+};
+
+proto.allOff = function() {
+  delete this._events;
+  delete this._onceEvents;
+};
+
+return EvEmitter;
+
+}));
+
+/*!
+ * imagesLoaded v4.1.4
+ * JavaScript is all like "You images are done yet or what?"
+ * MIT License
+ */
+
+( function( window, factory ) { 'use strict';
+  // universal module definition
+
+  /*global define: false, module: false, require: false */
+
+  if ( typeof define == 'function' && define.amd ) {
+    // AMD
+    define( [
+      'ev-emitter/ev-emitter'
+    ], function( EvEmitter ) {
+      return factory( window, EvEmitter );
+    });
+  } else if ( typeof module == 'object' && module.exports ) {
+    // CommonJS
+    module.exports = factory(
+      window,
+      require('ev-emitter')
+    );
+  } else {
+    // browser global
+    window.imagesLoaded = factory(
+      window,
+      window.EvEmitter
+    );
+  }
+
+})( typeof window !== 'undefined' ? window : this,
+
+// --------------------------  factory -------------------------- //
+
+function factory( window, EvEmitter ) {
+
+
+
+var $ = window.jQuery;
+var console = window.console;
+
+// -------------------------- helpers -------------------------- //
+
+// extend objects
+function extend( a, b ) {
+  for ( var prop in b ) {
+    a[ prop ] = b[ prop ];
+  }
+  return a;
+}
+
+var arraySlice = Array.prototype.slice;
+
+// turn element or nodeList into an array
+function makeArray( obj ) {
+  if ( Array.isArray( obj ) ) {
+    // use object if already an array
+    return obj;
+  }
+
+  var isArrayLike = typeof obj == 'object' && typeof obj.length == 'number';
+  if ( isArrayLike ) {
+    // convert nodeList to array
+    return arraySlice.call( obj );
+  }
+
+  // array of single index
+  return [ obj ];
+}
+
+// -------------------------- imagesLoaded -------------------------- //
+
+/**
+ * @param {Array, Element, NodeList, String} elem
+ * @param {Object or Function} options - if function, use as callback
+ * @param {Function} onAlways - callback function
+ */
+function ImagesLoaded( elem, options, onAlways ) {
+  // coerce ImagesLoaded() without new, to be new ImagesLoaded()
+  if ( !( this instanceof ImagesLoaded ) ) {
+    return new ImagesLoaded( elem, options, onAlways );
+  }
+  // use elem as selector string
+  var queryElem = elem;
+  if ( typeof elem == 'string' ) {
+    queryElem = document.querySelectorAll( elem );
+  }
+  // bail if bad element
+  if ( !queryElem ) {
+    console.error( 'Bad element for imagesLoaded ' + ( queryElem || elem ) );
+    return;
+  }
+
+  this.elements = makeArray( queryElem );
+  this.options = extend( {}, this.options );
+  // shift arguments if no options set
+  if ( typeof options == 'function' ) {
+    onAlways = options;
+  } else {
+    extend( this.options, options );
+  }
+
+  if ( onAlways ) {
+    this.on( 'always', onAlways );
+  }
+
+  this.getImages();
+
+  if ( $ ) {
+    // add jQuery Deferred object
+    this.jqDeferred = new $.Deferred();
+  }
+
+  // HACK check async to allow time to bind listeners
+  setTimeout( this.check.bind( this ) );
+}
+
+ImagesLoaded.prototype = Object.create( EvEmitter.prototype );
+
+ImagesLoaded.prototype.options = {};
+
+ImagesLoaded.prototype.getImages = function() {
+  this.images = [];
+
+  // filter & find items if we have an item selector
+  this.elements.forEach( this.addElementImages, this );
+};
+
+/**
+ * @param {Node} element
+ */
+ImagesLoaded.prototype.addElementImages = function( elem ) {
+  // filter siblings
+  if ( elem.nodeName == 'IMG' ) {
+    this.addImage( elem );
+  }
+  // get background image on element
+  if ( this.options.background === true ) {
+    this.addElementBackgroundImages( elem );
+  }
+
+  // find children
+  // no non-element nodes, #143
+  var nodeType = elem.nodeType;
+  if ( !nodeType || !elementNodeTypes[ nodeType ] ) {
+    return;
+  }
+  var childImgs = elem.querySelectorAll('img');
+  // concat childElems to filterFound array
+  for ( var i=0; i < childImgs.length; i++ ) {
+    var img = childImgs[i];
+    this.addImage( img );
+  }
+
+  // get child background images
+  if ( typeof this.options.background == 'string' ) {
+    var children = elem.querySelectorAll( this.options.background );
+    for ( i=0; i < children.length; i++ ) {
+      var child = children[i];
+      this.addElementBackgroundImages( child );
+    }
+  }
+};
+
+var elementNodeTypes = {
+  1: true,
+  9: true,
+  11: true
+};
+
+ImagesLoaded.prototype.addElementBackgroundImages = function( elem ) {
+  var style = getComputedStyle( elem );
+  if ( !style ) {
+    // Firefox returns null if in a hidden iframe https://bugzil.la/548397
+    return;
+  }
+  // get url inside url("...")
+  var reURL = /url\((['"])?(.*?)\1\)/gi;
+  var matches = reURL.exec( style.backgroundImage );
+  while ( matches !== null ) {
+    var url = matches && matches[2];
+    if ( url ) {
+      this.addBackground( url, elem );
+    }
+    matches = reURL.exec( style.backgroundImage );
+  }
+};
+
+/**
+ * @param {Image} img
+ */
+ImagesLoaded.prototype.addImage = function( img ) {
+  var loadingImage = new LoadingImage( img );
+  this.images.push( loadingImage );
+};
+
+ImagesLoaded.prototype.addBackground = function( url, elem ) {
+  var background = new Background( url, elem );
+  this.images.push( background );
+};
+
+ImagesLoaded.prototype.check = function() {
+  var _this = this;
+  this.progressedCount = 0;
+  this.hasAnyBroken = false;
+  // complete if no images
+  if ( !this.images.length ) {
+    this.complete();
+    return;
+  }
+
+  function onProgress( image, elem, message ) {
+    // HACK - Chrome triggers event before object properties have changed. #83
+    setTimeout( function() {
+      _this.progress( image, elem, message );
+    });
+  }
+
+  this.images.forEach( function( loadingImage ) {
+    loadingImage.once( 'progress', onProgress );
+    loadingImage.check();
+  });
+};
+
+ImagesLoaded.prototype.progress = function( image, elem, message ) {
+  this.progressedCount++;
+  this.hasAnyBroken = this.hasAnyBroken || !image.isLoaded;
+  // progress event
+  this.emitEvent( 'progress', [ this, image, elem ] );
+  if ( this.jqDeferred && this.jqDeferred.notify ) {
+    this.jqDeferred.notify( this, image );
+  }
+  // check if completed
+  if ( this.progressedCount == this.images.length ) {
+    this.complete();
+  }
+
+  if ( this.options.debug && console ) {
+    console.log( 'progress: ' + message, image, elem );
+  }
+};
+
+ImagesLoaded.prototype.complete = function() {
+  var eventName = this.hasAnyBroken ? 'fail' : 'done';
+  this.isComplete = true;
+  this.emitEvent( eventName, [ this ] );
+  this.emitEvent( 'always', [ this ] );
+  if ( this.jqDeferred ) {
+    var jqMethod = this.hasAnyBroken ? 'reject' : 'resolve';
+    this.jqDeferred[ jqMethod ]( this );
+  }
+};
+
+// --------------------------  -------------------------- //
+
+function LoadingImage( img ) {
+  this.img = img;
+}
+
+LoadingImage.prototype = Object.create( EvEmitter.prototype );
+
+LoadingImage.prototype.check = function() {
+  // If complete is true and browser supports natural sizes,
+  // try to check for image status manually.
+  var isComplete = this.getIsImageComplete();
+  if ( isComplete ) {
+    // report based on naturalWidth
+    this.confirm( this.img.naturalWidth !== 0, 'naturalWidth' );
+    return;
+  }
+
+  // If none of the checks above matched, simulate loading on detached element.
+  this.proxyImage = new Image();
+  this.proxyImage.addEventListener( 'load', this );
+  this.proxyImage.addEventListener( 'error', this );
+  // bind to image as well for Firefox. #191
+  this.img.addEventListener( 'load', this );
+  this.img.addEventListener( 'error', this );
+  this.proxyImage.src = this.img.src;
+};
+
+LoadingImage.prototype.getIsImageComplete = function() {
+  // check for non-zero, non-undefined naturalWidth
+  // fixes Safari+InfiniteScroll+Masonry bug infinite-scroll#671
+  return this.img.complete && this.img.naturalWidth;
+};
+
+LoadingImage.prototype.confirm = function( isLoaded, message ) {
+  this.isLoaded = isLoaded;
+  this.emitEvent( 'progress', [ this, this.img, message ] );
+};
+
+// ----- events ----- //
+
+// trigger specified handler for event type
+LoadingImage.prototype.handleEvent = function( event ) {
+  var method = 'on' + event.type;
+  if ( this[ method ] ) {
+    this[ method ]( event );
+  }
+};
+
+LoadingImage.prototype.onload = function() {
+  this.confirm( true, 'onload' );
+  this.unbindEvents();
+};
+
+LoadingImage.prototype.onerror = function() {
+  this.confirm( false, 'onerror' );
+  this.unbindEvents();
+};
+
+LoadingImage.prototype.unbindEvents = function() {
+  this.proxyImage.removeEventListener( 'load', this );
+  this.proxyImage.removeEventListener( 'error', this );
+  this.img.removeEventListener( 'load', this );
+  this.img.removeEventListener( 'error', this );
+};
+
+// -------------------------- Background -------------------------- //
+
+function Background( url, element ) {
+  this.url = url;
+  this.element = element;
+  this.img = new Image();
+}
+
+// inherit LoadingImage prototype
+Background.prototype = Object.create( LoadingImage.prototype );
+
+Background.prototype.check = function() {
+  this.img.addEventListener( 'load', this );
+  this.img.addEventListener( 'error', this );
+  this.img.src = this.url;
+  // check if image is already complete
+  var isComplete = this.getIsImageComplete();
+  if ( isComplete ) {
+    this.confirm( this.img.naturalWidth !== 0, 'naturalWidth' );
+    this.unbindEvents();
+  }
+};
+
+Background.prototype.unbindEvents = function() {
+  this.img.removeEventListener( 'load', this );
+  this.img.removeEventListener( 'error', this );
+};
+
+Background.prototype.confirm = function( isLoaded, message ) {
+  this.isLoaded = isLoaded;
+  this.emitEvent( 'progress', [ this, this.element, message ] );
+};
+
+// -------------------------- jQuery -------------------------- //
+
+ImagesLoaded.makeJQueryPlugin = function( jQuery ) {
+  jQuery = jQuery || window.jQuery;
+  if ( !jQuery ) {
+    return;
+  }
+  // set local variable
+  $ = jQuery;
+  // $().imagesLoaded()
+  $.fn.imagesLoaded = function( options, callback ) {
+    var instance = new ImagesLoaded( this, options, callback );
+    return instance.jqDeferred.promise( $(this) );
+  };
+};
+// try making plugin
+ImagesLoaded.makeJQueryPlugin();
+
+// --------------------------  -------------------------- //
+
+return ImagesLoaded;
+
+});
+
diff --git a/vendor/desandro/imagesloaded/imagesloaded.pkgd.min.js b/vendor/desandro/imagesloaded/imagesloaded.pkgd.min.js
new file mode 100644
index 000000000..e443a77d6
--- /dev/null
+++ b/vendor/desandro/imagesloaded/imagesloaded.pkgd.min.js
@@ -0,0 +1,7 @@
+/*!
+ * imagesLoaded PACKAGED v4.1.4
+ * JavaScript is all like "You images are done yet or what?"
+ * MIT License
+ */
+
+!function(e,t){"function"==typeof define&&define.amd?define("ev-emitter/ev-emitter",t):"object"==typeof module&&module.exports?module.exports=t():e.EvEmitter=t()}("undefined"!=typeof window?window:this,function(){function e(){}var t=e.prototype;return t.on=function(e,t){if(e&&t){var i=this._events=this._events||{},n=i[e]=i[e]||[];return n.indexOf(t)==-1&&n.push(t),this}},t.once=function(e,t){if(e&&t){this.on(e,t);var i=this._onceEvents=this._onceEvents||{},n=i[e]=i[e]||{};return n[t]=!0,this}},t.off=function(e,t){var i=this._events&&this._events[e];if(i&&i.length){var n=i.indexOf(t);return n!=-1&&i.splice(n,1),this}},t.emitEvent=function(e,t){var i=this._events&&this._events[e];if(i&&i.length){i=i.slice(0),t=t||[];for(var n=this._onceEvents&&this._onceEvents[e],o=0;o<i.length;o++){var r=i[o],s=n&&n[r];s&&(this.off(e,r),delete n[r]),r.apply(this,t)}return this}},t.allOff=function(){delete this._events,delete this._onceEvents},e}),function(e,t){"use strict";"function"==typeof define&&define.amd?define(["ev-emitter/ev-emitter"],function(i){return t(e,i)}):"object"==typeof module&&module.exports?module.exports=t(e,require("ev-emitter")):e.imagesLoaded=t(e,e.EvEmitter)}("undefined"!=typeof window?window:this,function(e,t){function i(e,t){for(var i in t)e[i]=t[i];return e}function n(e){if(Array.isArray(e))return e;var t="object"==typeof e&&"number"==typeof e.length;return t?d.call(e):[e]}function o(e,t,r){if(!(this instanceof o))return new o(e,t,r);var s=e;return"string"==typeof e&&(s=document.querySelectorAll(e)),s?(this.elements=n(s),this.options=i({},this.options),"function"==typeof t?r=t:i(this.options,t),r&&this.on("always",r),this.getImages(),h&&(this.jqDeferred=new h.Deferred),void setTimeout(this.check.bind(this))):void a.error("Bad element for imagesLoaded "+(s||e))}function r(e){this.img=e}function s(e,t){this.url=e,this.element=t,this.img=new Image}var h=e.jQuery,a=e.console,d=Array.prototype.slice;o.prototype=Object.create(t.prototype),o.prototype.options={},o.prototype.getImages=function(){this.images=[],this.elements.forEach(this.addElementImages,this)},o.prototype.addElementImages=function(e){"IMG"==e.nodeName&&this.addImage(e),this.options.background===!0&&this.addElementBackgroundImages(e);var t=e.nodeType;if(t&&u[t]){for(var i=e.querySelectorAll("img"),n=0;n<i.length;n++){var o=i[n];this.addImage(o)}if("string"==typeof this.options.background){var r=e.querySelectorAll(this.options.background);for(n=0;n<r.length;n++){var s=r[n];this.addElementBackgroundImages(s)}}}};var u={1:!0,9:!0,11:!0};return o.prototype.addElementBackgroundImages=function(e){var t=getComputedStyle(e);if(t)for(var i=/url\((['"])?(.*?)\1\)/gi,n=i.exec(t.backgroundImage);null!==n;){var o=n&&n[2];o&&this.addBackground(o,e),n=i.exec(t.backgroundImage)}},o.prototype.addImage=function(e){var t=new r(e);this.images.push(t)},o.prototype.addBackground=function(e,t){var i=new s(e,t);this.images.push(i)},o.prototype.check=function(){function e(e,i,n){setTimeout(function(){t.progress(e,i,n)})}var t=this;return this.progressedCount=0,this.hasAnyBroken=!1,this.images.length?void this.images.forEach(function(t){t.once("progress",e),t.check()}):void this.complete()},o.prototype.progress=function(e,t,i){this.progressedCount++,this.hasAnyBroken=this.hasAnyBroken||!e.isLoaded,this.emitEvent("progress",[this,e,t]),this.jqDeferred&&this.jqDeferred.notify&&this.jqDeferred.notify(this,e),this.progressedCount==this.images.length&&this.complete(),this.options.debug&&a&&a.log("progress: "+i,e,t)},o.prototype.complete=function(){var e=this.hasAnyBroken?"fail":"done";if(this.isComplete=!0,this.emitEvent(e,[this]),this.emitEvent("always",[this]),this.jqDeferred){var t=this.hasAnyBroken?"reject":"resolve";this.jqDeferred[t](this)}},r.prototype=Object.create(t.prototype),r.prototype.check=function(){var e=this.getIsImageComplete();return e?void this.confirm(0!==this.img.naturalWidth,"naturalWidth"):(this.proxyImage=new Image,this.proxyImage.addEventListener("load",this),this.proxyImage.addEventListener("error",this),this.img.addEventListener("load",this),this.img.addEventListener("error",this),void(this.proxyImage.src=this.img.src))},r.prototype.getIsImageComplete=function(){return this.img.complete&&this.img.naturalWidth},r.prototype.confirm=function(e,t){this.isLoaded=e,this.emitEvent("progress",[this,this.img,t])},r.prototype.handleEvent=function(e){var t="on"+e.type;this[t]&&this[t](e)},r.prototype.onload=function(){this.confirm(!0,"onload"),this.unbindEvents()},r.prototype.onerror=function(){this.confirm(!1,"onerror"),this.unbindEvents()},r.prototype.unbindEvents=function(){this.proxyImage.removeEventListener("load",this),this.proxyImage.removeEventListener("error",this),this.img.removeEventListener("load",this),this.img.removeEventListener("error",this)},s.prototype=Object.create(r.prototype),s.prototype.check=function(){this.img.addEventListener("load",this),this.img.addEventListener("error",this),this.img.src=this.url;var e=this.getIsImageComplete();e&&(this.confirm(0!==this.img.naturalWidth,"naturalWidth"),this.unbindEvents())},s.prototype.unbindEvents=function(){this.img.removeEventListener("load",this),this.img.removeEventListener("error",this)},s.prototype.confirm=function(e,t){this.isLoaded=e,this.emitEvent("progress",[this,this.element,t])},o.makeJQueryPlugin=function(t){t=t||e.jQuery,t&&(h=t,h.fn.imagesLoaded=function(e,t){var i=new o(this,e,t);return i.jqDeferred.promise(h(this))})},o.makeJQueryPlugin(),o});
\ No newline at end of file
diff --git a/vendor/desandro/imagesloaded/package.json b/vendor/desandro/imagesloaded/package.json
new file mode 100644
index 000000000..ced516d8e
--- /dev/null
+++ b/vendor/desandro/imagesloaded/package.json
@@ -0,0 +1,48 @@
+{
+  "name": "imagesloaded",
+  "version": "4.1.4",
+  "description": "JavaScript is all like _You images done yet or what?_",
+  "main": "imagesloaded.js",
+  "dependencies": {
+    "ev-emitter": "^1.0.0"
+  },
+  "devDependencies": {
+    "chalk": "^1.1.1",
+    "cheerio": "^0.19.0",
+    "gulp": "^3.9.0",
+    "gulp-jshint": "^1.11.2",
+    "gulp-json-lint": "^0.1.0",
+    "gulp-rename": "^1.2.2",
+    "gulp-replace": "^0.5.4",
+    "gulp-requirejs-optimize": "github:metafizzy/gulp-requirejs-optimize",
+    "gulp-uglify": "^1.4.2",
+    "gulp-util": "^3.0.7",
+    "highlight.js": "^8.9.1",
+    "marked": "^0.3.5",
+    "minimist": "^1.2.0",
+    "transfob": "^1.0.0"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/desandro/imagesloaded.git"
+  },
+  "keywords": [
+    "images",
+    "loaded",
+    "ui",
+    "dom",
+    "jquery-plugin"
+  ],
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/desandro/imagesloaded/issues"
+  },
+  "homepage": "https://github.com/desandro/imagesloaded",
+  "directories": {
+    "test": "test"
+  },
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "David DeSandro"
+}
diff --git a/vendor/desandro/imagesloaded/sandbox/background/css/background.css b/vendor/desandro/imagesloaded/sandbox/background/css/background.css
new file mode 100644
index 000000000..509966a7d
--- /dev/null
+++ b/vendor/desandro/imagesloaded/sandbox/background/css/background.css
@@ -0,0 +1,29 @@
+.box {
+  width: 300px;
+  height: 300px;
+  margin: 0 20px 20px 0;
+  border: 1px solid;
+  display: inline-block;
+}
+
+.orange-tree {
+  background: url('http://i.imgur.com/bwy74ok.jpg');
+  background-size: cover;
+}
+
+.thunder-cloud {
+  background: url('../../../test/img/thunder-cloud.jpg');
+  background-size: contain;
+}
+
+.multi1 {
+  background:
+    url("http://i.imgur.com/ZAVN3.png"),
+    url('http://i.imgur.com/6UdOxeB.png') bottom right,
+    url(http://i.imgur.com/LkmcILl.jpg);
+  background-size: cover;
+}
+
+.blue {
+  background: #09F;
+}
\ No newline at end of file
diff --git a/vendor/desandro/imagesloaded/sandbox/background/index.html b/vendor/desandro/imagesloaded/sandbox/background/index.html
new file mode 100644
index 000000000..853f8ff35
--- /dev/null
+++ b/vendor/desandro/imagesloaded/sandbox/background/index.html
@@ -0,0 +1,51 @@
+<!doctype html>
+<html>
+<head>
+  <meta charset="utf-8" />
+  <meta name="viewport" content="width=device-width" />
+
+  <title>background</title>
+
+  <!-- put in separate folder so JS path is different from CSS path -->
+  <link rel="stylesheet" href="css/background.css" >
+
+</head>
+<body>
+
+  <h1>background</h1>
+
+<div class="box orange-tree"></div>
+
+<div class="box thunder-cloud"></div>
+
+<div class="box multi1"></div>
+
+<div class="box blue"></div>
+
+<script src="../../bower_components/ev-emitter/ev-emitter.js"></script>
+<script src="../../imagesloaded.js"></script>
+<script>
+
+var imgLoad0 = imagesLoaded( '.orange-tree', { background: true }, function() {
+  console.log('orange tree bg images loaded', imgLoad0.images.length );
+});
+
+var imgLoad1 = imagesLoaded( '.thunder-cloud', { background: true }, function() {
+  console.log('thunder cloud bg images loaded', imgLoad1.images.length);
+});
+
+var imgLoad2 = imagesLoaded( '.multi1', { background: true }, function() {
+  console.log('multi1 bg images loaded', imgLoad2.images.length);
+});
+
+var imgLoad3 = imagesLoaded( '.box', { background: true }, function() {
+  console.log('.box bg images loaded', imgLoad3.images.length);
+});
+imgLoad3.on('progress', function( instance, image, element ) {
+  console.log( 'progress on .box', image.img.src, element.className );
+});
+
+</script>
+
+</body>
+</html>
diff --git a/vendor/desandro/imagesloaded/sandbox/progress/index.html b/vendor/desandro/imagesloaded/sandbox/progress/index.html
new file mode 100644
index 000000000..b01ce28c5
--- /dev/null
+++ b/vendor/desandro/imagesloaded/sandbox/progress/index.html
@@ -0,0 +1,89 @@
+<!doctype html>
+<html>
+<head>
+  <meta charset="utf-8" />
+  <meta name="viewport" content="width=device-width" />
+
+  <title>progress</title>
+
+  <style>
+  #image-container img {
+    max-height: 140px;
+  }
+
+  li {
+    height: 140px;
+    min-width: 100px;
+    display: block;
+    float: left;
+    list-style: none;
+    margin: 0 5px 5px 0;
+    background-color: black;
+    background-position: center center;
+    background-repeat: no-repeat;
+  }
+
+  li img,
+  #status {
+    -webkit-transition: opacity 0.4s;
+       -moz-transition: opacity 0.4s;
+        -ms-transition: opacity 0.4s;
+            transition: opacity 0.4s;
+  }
+
+  li.is-loading {
+    background-color: black;
+    background-image: url('http://desandro.github.io/imagesloaded/assets/loading.gif');
+  }
+
+  li.is-broken {
+    background-image: url('http://desandro.github.io/imagesloaded/assets/broken.png');
+    background-color: #be3730;
+    width: 120px;
+  }
+
+  li.is-loading img,
+  li.is-broken img {
+    opacity: 0;
+  }
+
+  .buttons { margin-bottom: 1.0em; }
+
+  button {
+    font-size: 18px;
+    padding: 0.4em 0.8em;
+    font-family: sans-serif;
+  }
+
+  #status {
+    opacity: 0;
+    position: fixed;
+    right: 20px;
+    top: 20px;
+    background: hsla( 0, 0%, 0%, 0.8);
+    padding: 20px;
+    border-radius: 10px;
+    z-index: 2; /* over other stuff */
+  }
+  </style>
+  
+</head>
+<body>
+
+  <h1>progress</h1>
+
+  <div class="buttons">
+    <button id="add">Add images</button>
+    <button id="reset">Reset</button>
+  </div>
+  <div id="status">
+    <progress max="7" value="0"></progress>
+  </div>
+  <div id="image-container"></div>
+
+<script src="../../bower_components/ev-emitter/ev-emitter.js"></script>
+<script src="../../imagesloaded.js"></script>
+<script src="progress.js"></script>
+
+</body>
+</html>
diff --git a/vendor/desandro/imagesloaded/sandbox/progress/progress.js b/vendor/desandro/imagesloaded/sandbox/progress/progress.js
new file mode 100644
index 000000000..7c00003f5
--- /dev/null
+++ b/vendor/desandro/imagesloaded/sandbox/progress/progress.js
@@ -0,0 +1,111 @@
+/* jshint strict: false */
+
+var progressElem, statusElem;
+var supportsProgress;
+var loadedImageCount, imageCount;
+
+var container = document.querySelector('#image-container');
+statusElem = document.querySelector('#status');
+progressElem = document.querySelector('progress');
+
+supportsProgress = progressElem &&
+  // IE does not support progress
+  progressElem.toString().indexOf('Unknown') === -1;
+
+document.querySelector('#add').onclick = function() {
+  // add new images
+  var fragment = getItemsFragment();
+  container.insertBefore( fragment, container.firstChild );
+  // use ImagesLoaded
+  var imgLoad = imagesLoaded( container );
+  imgLoad.on( 'progress', onProgress );
+  imgLoad.on( 'always', onAlways );
+  // reset progress counter
+  imageCount = imgLoad.images.length;
+  resetProgress();
+  updateProgress( 0 );
+};
+
+// reset container
+document.querySelector('#reset').onclick = function() {
+  empty( container );
+};
+
+// ----- set text helper ----- //
+
+var docElem = document.documentElement;
+var textSetter = docElem.textContent !== undefined ? 'textContent' : 'innerText';
+
+function setText( elem, value ) {
+  elem[ textSetter ] = value;
+}
+
+function empty( elem ) {
+  while ( elem.firstChild ) {
+    elem.removeChild( elem.firstChild );
+  }
+}
+
+// -----  ----- //
+
+// return doc fragment with
+function getItemsFragment() {
+  var fragment = document.createDocumentFragment();
+  for ( var i = 0; i < 7; i++ ) {
+    var item = getImageItem();
+    fragment.appendChild( item );
+  }
+  return fragment;
+}
+
+// return an <li> with a <img> in it
+function getImageItem() {
+  var item = document.createElement('li');
+  item.className = 'is-loading';
+  var img = document.createElement('img');
+  var size = Math.random() * 3 + 1;
+  var width = Math.random() * 110 + 100;
+  width = Math.round( width * size );
+  var height = Math.round( 140 * size );
+  var rando = Math.ceil( Math.random() * 1000 );
+  // 10% chance of broken image src
+  // random parameter to prevent cached images
+  img.src = rando < 100 ? '//foo/broken-' + rando + '.jpg' :
+    // use picsum for great random images
+    'https://picsum.photos/' + width + '/' + height + '/' + '?random';
+  item.appendChild( img );
+  return item;
+}
+
+// -----  ----- //
+
+function resetProgress() {
+  statusElem.style.opacity = 1;
+  loadedImageCount = 0;
+  if ( supportsProgress ) {
+    progressElem.setAttribute( 'max', imageCount );
+  }
+}
+
+function updateProgress( value ) {
+  if ( supportsProgress ) {
+    progressElem.setAttribute( 'value', value );
+  } else {
+    // if you don't support progress elem
+    setText( statusElem, value + ' / ' + imageCount );
+  }
+}
+
+// triggered after each item is loaded
+function onProgress( imgLoad, image ) {
+  // change class if the image is loaded or broken
+  image.img.parentNode.className = image.isLoaded ? '' : 'is-broken';
+  // update progress element
+  loadedImageCount++;
+  updateProgress( loadedImageCount );
+}
+
+// hide status when done
+function onAlways() {
+  statusElem.style.opacity = 0;
+}
diff --git a/vendor/desandro/imagesloaded/test/css/tests.css b/vendor/desandro/imagesloaded/test/css/tests.css
new file mode 100644
index 000000000..af8a7e885
--- /dev/null
+++ b/vendor/desandro/imagesloaded/test/css/tests.css
@@ -0,0 +1,41 @@
+img {
+  display: inline-block;
+  max-width: 240px;
+}
+
+/* ---- backgrounds ---- */
+
+.bg-box {
+  width: 240px;
+  height: 240px;
+  margin: 0 20px 20px 0;
+  border: 1px solid;
+  display: inline-block;
+}
+
+.bg-box.tulip {
+  background: url('http://i.imgur.com/9xYjgCk.jpg');
+  background-size: cover;
+}
+
+.bg-box.thunder-cloud {
+  background: url('../img/thunder-cloud.jpg');
+  background-size: contain;
+}
+
+.bg-box.multi {
+  background:
+    url("http://i.imgur.com/ZAVN3.png"),
+    url('http://i.imgur.com/6UdOxeB.png') bottom right,
+    url(https://picsum.photos/601/401/?random);
+  background-size: cover;
+}
+
+.bg-box.blue {
+  background: #09F;
+}
+
+.bg-box.gulls {
+  background-image: url('http://i.imgur.com/qKhkOKC.jpg');
+  background-size: cover;
+}
diff --git a/vendor/desandro/imagesloaded/test/img/blue-shell.jpg b/vendor/desandro/imagesloaded/test/img/blue-shell.jpg
new file mode 100644
index 000000000..b47f1e927
--- /dev/null
+++ b/vendor/desandro/imagesloaded/test/img/blue-shell.jpg
diff --git a/vendor/desandro/imagesloaded/test/img/bowser-jr.jpg b/vendor/desandro/imagesloaded/test/img/bowser-jr.jpg
new file mode 100644
index 000000000..b1de2a76f
--- /dev/null
+++ b/vendor/desandro/imagesloaded/test/img/bowser-jr.jpg
diff --git a/vendor/desandro/imagesloaded/test/img/thunder-cloud.jpg b/vendor/desandro/imagesloaded/test/img/thunder-cloud.jpg
new file mode 100644
index 000000000..54fc9a1b7
--- /dev/null
+++ b/vendor/desandro/imagesloaded/test/img/thunder-cloud.jpg
diff --git a/vendor/desandro/imagesloaded/test/index.html b/vendor/desandro/imagesloaded/test/index.html
new file mode 100644
index 000000000..02b04f4a6
--- /dev/null
+++ b/vendor/desandro/imagesloaded/test/index.html
@@ -0,0 +1,104 @@
+<!doctype html>
+<html>
+<head>
+  <meta charset="utf-8">
+
+  <title>imagesLoaded tests</title>
+
+  <link rel="stylesheet" href="../bower_components/qunit/qunit/qunit.css" />
+  <link rel="stylesheet" href="css/tests.css" />
+
+  <script src="../bower_components/ev-emitter/ev-emitter.js"></script>
+  <script src="../bower_components/qunit/qunit/qunit.js"></script>
+  <script src="../bower_components/jquery/dist/jquery.js"></script>
+
+  <script src="../imagesloaded.js"></script>
+
+  <script src="unit/basics.js"></script>
+  <script src="unit/selector-string.js"></script>
+  <script src="unit/single-element.js"></script>
+  <script src="unit/local-files.js"></script>
+  <script src="unit/data-uri.js"></script>
+  <script src="unit/append.js"></script>
+  <script src="unit/no-images.js"></script>
+  <script src="unit/jquery-success.js"></script>
+  <script src="unit/jquery-fail.js"></script>
+  <script src="unit/non-element.js"></script>
+  <script src="unit/background.js"></script>
+
+</head>
+<body>
+
+  <h1>imagesLoaded tests</h1>
+
+  <div id="qunit"></div>
+
+  <h2>Basics</h2>
+
+  <div id="basics">
+    <img src="http://i.imgur.com/xrQHn.jpg" />
+    <img src="http://i.imgur.com/b3fBJ.jpg" />
+    <img src="http://i.imgur.com/xmSh2.jpg" />
+    <img src="http://i.imgur.com/iIpJm.jpg" />
+    <img src="http://i.imgur.com/cvZZl10.gif" />
+  </div>
+
+  <img id="mario-with-shell" src="http://i.imgur.com/ZAVN3.png" >
+
+  <h2>Locals</h2>
+
+  <div id="locals">
+    <img src="img/blue-shell.jpg" />
+    <img src="img/bowser-jr.jpg" />
+    <!-- thunder cloud has bad permissions, should 403 -->
+    <img src="img/not-there.jpg" />
+  </div>
+
+  <h2>Data URI</h2>
+
+  <div id="data-uri">
+    <img src="data:image/jpeg;base64,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" />
+    <img src="data:image/png;base64,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" />
+  </div>
+
+  <h2>append</h2>
+
+  <div id="append"></div>
+
+  <h2>no images</h2>
+
+  <div id="no-images"></div>
+
+  <h2>jQuery success</h2>
+
+  <div id="jquery-success">
+    <img src="http://i.imgur.com/YbYCPFF.png" />
+    <img src="http://i.imgur.com/6UdOxeB.png" />
+    <img src="http://i.imgur.com/qd8G15D.png" />
+  </div>
+
+  <h2>jQuery fail</h2>
+
+  <div id="jquery-fail">
+    <img src="http://i.imgur.com/xmSh2.jpg" />
+    <img src="img/bowser-jr.jpg" />
+    <img src="http://i.imgur.com/ZAVN3.png">
+    <img src="img/not-there.jpg" />
+    <img src="foobar.jpg" />
+  </div>
+
+  <h2>background</h2>
+
+  <div id="background">
+    <div class="bg-box tulip"></div>
+    <div class="bg-box thunder-cloud"></div>
+    <div class="bg-box multi"></div>
+    <div class="bg-box blue"></div>
+    <div class="bg-box gulls">
+      <img src="https://picsum.photos/400/300/?random" />
+      <img src="https://picsum.photos/800/600/?random" />
+    </div>
+  </div>
+
+</body>
+</html>
diff --git a/vendor/desandro/imagesloaded/test/unit/append.js b/vendor/desandro/imagesloaded/test/unit/append.js
new file mode 100644
index 000000000..7a6b3c827
--- /dev/null
+++ b/vendor/desandro/imagesloaded/test/unit/append.js
@@ -0,0 +1,30 @@
+QUnit.test( 'append', function( assert ) {
+  'use strict';
+
+  var imgUrls = [
+    'http://i.imgur.com/bwy74ok.jpg',
+    'http://i.imgur.com/bAZWoqx.jpg',
+    'http://i.imgur.com/PgmEBSB.jpg',
+    'http://i.imgur.com/aboaFoB.jpg',
+    'http://i.imgur.com/LkmcILl.jpg',
+    'http://i.imgur.com/q9zO6tw.jpg'
+  ];
+
+  // create images
+  var fragment = document.createDocumentFragment();
+  for ( var i=0, len = imgUrls.length; i < len; i++ ) {
+    var img = document.createElement('img');
+    img.src = imgUrls[i];
+    fragment.appendChild( img );
+  }
+
+  var elem = document.querySelector('#append');
+  elem.appendChild( fragment );
+  var done = assert.async();
+
+  imagesLoaded( elem, { debug: false } ).on( 'always', function() {
+    assert.ok( 'appended images loaded' );
+    done();
+  }); 
+
+});
diff --git a/vendor/desandro/imagesloaded/test/unit/background.js b/vendor/desandro/imagesloaded/test/unit/background.js
new file mode 100644
index 000000000..ca76fad6f
--- /dev/null
+++ b/vendor/desandro/imagesloaded/test/unit/background.js
@@ -0,0 +1,70 @@
+QUnit.test( 'background', function( assert ) {
+  'use strict';
+
+  // from Modernizr
+  var supportsMultiBGs = ( function() {
+    var style = document.createElement('a').style;
+    style.cssText = 'background:url(https://),url(https://),red url(https://)';
+    return (/(url\s*\(.*?){3}/).test(style.background);
+  })();
+
+  var multiBGCount = supportsMultiBGs ? 3 : 0;
+  var done = assert.async( 14 + multiBGCount );
+
+  var imgLoad0 = imagesLoaded( '#background .tulip', { background: true }, function() {
+    assert.ok( true, 'callback triggered on .orange-tree');
+    done();
+  });
+  assert.equal( imgLoad0.images.length, 1, '1 image on .images' );
+
+  imgLoad0.on( 'progress', function( instance, image, element ) {
+    assert.ok( element.nodeName == 'DIV', 'progress; element is div');
+    assert.ok( image.isLoaded, 'progress; image.isLoaded');
+    done();
+  });
+
+  var imgLoad1 = imagesLoaded( '#background .thunder-cloud', { background: true }, function() {
+    assert.ok( true, 'callback triggered on .thunder-cloud');
+    done();
+  });
+  assert.equal( imgLoad1.images.length, 1, '1 image on .images' );
+
+  // multiple backgrounds
+  var imgLoad2 = imagesLoaded( '#background .multi', { background: true }, function() {
+    assert.ok( true, 'callback triggered on .multi');
+    done();
+  });
+  assert.equal( imgLoad2.images.length, multiBGCount, 'correct multiple BG count on .images' );
+
+  // multiple elements
+  var imgLoad3 = imagesLoaded( '#background .bg-box', { background: true }, function() {
+    assert.ok( true, 'callback triggered on .bg-box');
+    var count = 5 + multiBGCount;
+    assert.equal( imgLoad3.images.length, count, count + ' images on .bg-box' );
+    done();
+  });
+
+  imgLoad3.on('progress', function( instance, image/*, element */) {
+    assert.ok( true, 'progress on .bg-box; ' + image.img.src );
+    assert.equal( image.isLoaded, true, 'image.isLoaded == true' );
+    done();
+  });
+
+  // background and <img> children
+  var imgLoad4 = imagesLoaded( '#background .gulls', { background: true } );
+  assert.equal( imgLoad4.images.length, 3, '3 images: 1 background and 2 <img>' );
+
+  imgLoad4.on( 'progress', function( instance, image ) {
+    assert.equal( image.isLoaded, true, 'image is loaded' );
+    done();
+  });
+
+  // child background selector
+  var imgLoad5 = imagesLoaded( '#background', { background: '.bg-box' }, function() {
+    var count = 5 + multiBGCount;
+    assert.equal( imgLoad5.images.length, count,
+      count + ' images on .bg-box, with {background: .bg-box}' );
+    done();
+  });
+
+});
diff --git a/vendor/desandro/imagesloaded/test/unit/basics.js b/vendor/desandro/imagesloaded/test/unit/basics.js
new file mode 100644
index 000000000..6c502a793
--- /dev/null
+++ b/vendor/desandro/imagesloaded/test/unit/basics.js
@@ -0,0 +1,28 @@
+QUnit.test( 'basics', function( assert ) {
+
+  'use strict';
+
+  var elem = document.querySelector('#basics');
+  var images = elem.querySelectorAll('img');
+  var done = assert.async( 3 + images.length );
+
+  var imgLoader = new imagesLoaded( elem, function( obj ) {
+    assert.ok( true, 'callback function triggered' );
+    assert.equal( imgLoader, obj, 'callback argument and instance match' );
+    done();
+  });
+  imgLoader.on( 'done', function() {
+    assert.ok( true, 'done event triggered' );
+    done();
+  });
+  imgLoader.on( 'always', function() {
+    assert.ok( true, 'always event triggered' );
+    done();
+  });
+
+  imgLoader.on( 'progress', function( loader, image ) {
+    assert.ok( image.isLoaded, 'image is loaded');
+    done();
+  });
+
+});
diff --git a/vendor/desandro/imagesloaded/test/unit/data-uri.js b/vendor/desandro/imagesloaded/test/unit/data-uri.js
new file mode 100644
index 000000000..635f69859
--- /dev/null
+++ b/vendor/desandro/imagesloaded/test/unit/data-uri.js
@@ -0,0 +1,10 @@
+QUnit.test( 'data-uri', function( assert ) {
+  'use strict';
+
+  var done = assert.async();
+  imagesLoaded('#data-uri', { debug: false }).on( 'done', function( obj ) {
+    assert.ok( true, 'data-uri images loaded' );
+    assert.equal( obj.images.length, 2, 'instance has 2 images' );
+    done();
+  });
+});
diff --git a/vendor/desandro/imagesloaded/test/unit/jquery-fail.js b/vendor/desandro/imagesloaded/test/unit/jquery-fail.js
new file mode 100644
index 000000000..b2180f6f2
--- /dev/null
+++ b/vendor/desandro/imagesloaded/test/unit/jquery-fail.js
@@ -0,0 +1,29 @@
+QUnit.test( 'jquery fail', function( assert ) {
+
+  'use strict';
+
+  var $ = window.jQuery;
+  var $images = $('#jquery-fail img');
+  var done = assert.async( 3 + $images.length );
+
+  $('#jquery-fail').imagesLoaded( function( instance ) {
+      assert.ok( true, 'callback triggered' );
+      assert.ok( instance instanceof imagesLoaded, 'instance instanceof imagesLoaded' );
+      done();
+    })
+    .fail( function( instance ) {
+      assert.ok( true, 'fail triggered' );
+      assert.ok( instance instanceof imagesLoaded, 'instance instanceof imagesLoaded' );
+      done();
+    })
+    .always( function( instance ) {
+      assert.ok( true, 'always triggered' );
+      assert.ok( instance instanceof imagesLoaded, 'instance instanceof imagesLoaded' );
+      done();
+    })
+  .progress( function(/* instance, image */) {
+      assert.ok( true, 'progress trigged');
+      done();
+    });
+
+  });
diff --git a/vendor/desandro/imagesloaded/test/unit/jquery-success.js b/vendor/desandro/imagesloaded/test/unit/jquery-success.js
new file mode 100644
index 000000000..f16621088
--- /dev/null
+++ b/vendor/desandro/imagesloaded/test/unit/jquery-success.js
@@ -0,0 +1,28 @@
+QUnit.test( 'jquery success', function( assert ) {
+
+  'use strict';
+
+  var $ = window.jQuery;
+  var done = assert.async( 6 );
+
+  $('#jquery-success').imagesLoaded( function( instance ) {
+      assert.ok( true, 'callback triggered' );
+      assert.ok( instance instanceof imagesLoaded, 'instance instanceof imagesLoaded' );
+      done();
+    })
+    .done( function( instance ) {
+      assert.ok( true, 'done triggered' );
+      assert.ok( instance instanceof imagesLoaded, 'instance instanceof imagesLoaded' );
+      done();
+    })
+    .always( function( instance ) {
+      assert.ok( true, 'always triggered' );
+      assert.ok( instance instanceof imagesLoaded, 'instance instanceof imagesLoaded' );
+      done();
+    })
+    .progress( function( instance, image ) {
+      assert.ok( image.isLoaded, 'progress trigged, image is loaded');
+      done();
+    });
+
+});
diff --git a/vendor/desandro/imagesloaded/test/unit/local-files.js b/vendor/desandro/imagesloaded/test/unit/local-files.js
new file mode 100644
index 000000000..61da6ae92
--- /dev/null
+++ b/vendor/desandro/imagesloaded/test/unit/local-files.js
@@ -0,0 +1,31 @@
+QUnit.test( 'local files', function( assert ) {
+  'use strict';
+
+  var elem = document.querySelector('#locals');
+  var done = assert.async( 6 );
+
+  var imgLoader = new imagesLoaded( elem, function( obj ) {
+    assert.ok( true, 'callback function triggered' );
+    assert.equal( imgLoader, obj, 'callback argument and instance match' );
+    done();
+  });
+  imgLoader.on( 'fail', function() {
+    assert.ok( true, 'fail event triggered' );
+    done();
+  });
+  imgLoader.on( 'always', function() {
+    assert.ok( true, 'always event triggered' );
+    done();
+  });
+
+  imgLoader.on( 'progress', function( loader, image ) {
+    assert.ok( true, 'image progressed');
+    if ( image.img.src.indexOf('img/not-there.jpg') !== -1 ) {
+      assert.ok( !image.isLoaded, 'thunder cloud is not loaded' );
+    } else {
+      assert.ok( image.isLoaded, 'image is loaded' );
+    }
+    done();
+  });
+
+});
diff --git a/vendor/desandro/imagesloaded/test/unit/no-images.js b/vendor/desandro/imagesloaded/test/unit/no-images.js
new file mode 100644
index 000000000..841216381
--- /dev/null
+++ b/vendor/desandro/imagesloaded/test/unit/no-images.js
@@ -0,0 +1,11 @@
+QUnit.test( 'no images', function( assert ) {
+  'use strict';
+
+  var elem = document.querySelector('#no-images');
+  var done = assert.async();
+  imagesLoaded( elem, function() {
+    assert.ok( true, 'triggered with no images' );
+    done();
+  });
+
+});
diff --git a/vendor/desandro/imagesloaded/test/unit/non-element.js b/vendor/desandro/imagesloaded/test/unit/non-element.js
new file mode 100644
index 000000000..4c9986fa6
--- /dev/null
+++ b/vendor/desandro/imagesloaded/test/unit/non-element.js
@@ -0,0 +1,24 @@
+QUnit.test( 'dismiss non-element nodes', function( assert ) {
+  'use strict';
+
+  var $ = window.jQuery;
+  var done = assert.async( 2 );
+
+  $(' <img src="https://picsum.photos/401/301/?random" /> <img src="https://picsum.photos/402/302/?random" /> ')
+    .imagesLoaded(function() {
+      assert.ok( true, 'elements from jQuery string ok' );
+      done();
+    });
+
+  // test fragment
+  var frag = document.createDocumentFragment();
+  var img = new Image();
+  img.src = 'https://picsum.photos/403/303/?random';
+  frag.appendChild( img );
+  var imgLoad = imagesLoaded( frag, function() {
+    assert.ok( true, 'document fragment ok' );
+    assert.equal( imgLoad.images.length, 1, '1 image found' );
+    done();
+  });
+
+});
diff --git a/vendor/desandro/imagesloaded/test/unit/selector-string.js b/vendor/desandro/imagesloaded/test/unit/selector-string.js
new file mode 100644
index 000000000..8c43c4bef
--- /dev/null
+++ b/vendor/desandro/imagesloaded/test/unit/selector-string.js
@@ -0,0 +1,12 @@
+QUnit.test( 'selector string', function( assert ) {
+  'use strict';
+  var images = document.querySelectorAll('#basics img');
+  var done = assert.async();
+  var imgLoad = imagesLoaded('#basics', { debug: true }).on( 'done', function( obj ) {
+    assert.ok( true, 'selector string worked' );
+    assert.ok( obj.images, 'argument has images' );
+    assert.equal( obj.images.length, images.length, 'images.length matches' );
+    done();
+  });
+  assert.ok( imgLoad.options.debug, 'debug option set' );
+});
diff --git a/vendor/desandro/imagesloaded/test/unit/single-element.js b/vendor/desandro/imagesloaded/test/unit/single-element.js
new file mode 100644
index 000000000..42d7e48ee
--- /dev/null
+++ b/vendor/desandro/imagesloaded/test/unit/single-element.js
@@ -0,0 +1,11 @@
+QUnit.test( 'single element', function( assert ) {
+  'use strict';
+  var elem = document.querySelector('#mario-with-shell');
+  var done = assert.async();
+  imagesLoaded( elem ).on( 'done', function( obj ) {
+    assert.ok( true, 'single element worked' );
+    assert.ok( obj.images, 'argument has images' );
+    assert.equal( obj.images.length, 1, 'images.length = 1' );
+    done();
+  });
+});