diff --git a/core/assets/vendor/picturefill/picturefill.js b/core/assets/vendor/picturefill/picturefill.js
deleted file mode 100644
index db71d5f..0000000
--- a/core/assets/vendor/picturefill/picturefill.js
+++ /dev/null
@@ -1,659 +0,0 @@
-/*! Picturefill - v2.2.1 - 2015-02-03
-* http://scottjehl.github.io/picturefill
-* Copyright (c) 2015 https://github.com/scottjehl/picturefill/blob/master/Authors.txt; Licensed MIT */
-/*! matchMedia() polyfill - Test a CSS media type/query in JS. Authors & copyright (c) 2012: Scott Jehl, Paul Irish, Nicholas Zakas, David Knight. Dual MIT/BSD license */
-
-window.matchMedia || (window.matchMedia = function() {
-	"use strict";
-
-	// For browsers that support matchMedium api such as IE 9 and webkit
-	var styleMedia = (window.styleMedia || window.media);
-
-	// For those that don't support matchMedium
-	if (!styleMedia) {
-		var style       = document.createElement('style'),
-			script      = document.getElementsByTagName('script')[0],
-			info        = null;
-
-		style.type  = 'text/css';
-		style.id    = 'matchmediajs-test';
-
-		script.parentNode.insertBefore(style, script);
-
-		// 'style.currentStyle' is used by IE <= 8 and 'window.getComputedStyle' for all other browsers
-		info = ('getComputedStyle' in window) && window.getComputedStyle(style, null) || style.currentStyle;
-
-		styleMedia = {
-			matchMedium: function(media) {
-				var text = '@media ' + media + '{ #matchmediajs-test { width: 1px; } }';
-
-				// 'style.styleSheet' is used by IE <= 8 and 'style.textContent' for all other browsers
-				if (style.styleSheet) {
-					style.styleSheet.cssText = text;
-				} else {
-					style.textContent = text;
-				}
-
-				// Test if media query is true or false
-				return info.width === '1px';
-			}
-		};
-	}
-
-	return function(media) {
-		return {
-			matches: styleMedia.matchMedium(media || 'all'),
-			media: media || 'all'
-		};
-	};
-}());
-/*! Picturefill - Responsive Images that work today.
-*  Author: Scott Jehl, Filament Group, 2012 ( new proposal implemented by Shawn Jansepar )
-*  License: MIT/GPLv2
-*  Spec: http://picture.responsiveimages.org/
-*/
-(function( w, doc, image ) {
-	// Enable strict mode
-	"use strict";
-
-	// If picture is supported, well, that's awesome. Let's get outta here...
-	if ( w.HTMLPictureElement ) {
-		w.picturefill = function() { };
-		return;
-	}
-
-	// HTML shim|v it for old IE (IE9 will still need the HTML video tag workaround)
-	doc.createElement( "picture" );
-
-	// local object for method references and testing exposure
-	var pf = {};
-
-	// namespace
-	pf.ns = "picturefill";
-
-	// srcset support test
-	(function() {
-		pf.srcsetSupported = "srcset" in image;
-		pf.sizesSupported = "sizes" in image;
-	})();
-
-	// just a string trim workaround
-	pf.trim = function( str ) {
-		return str.trim ? str.trim() : str.replace( /^\s+|\s+$/g, "" );
-	};
-
-	// just a string endsWith workaround
-	pf.endsWith = function( str, suffix ) {
-		return str.endsWith ? str.endsWith( suffix ) : str.indexOf( suffix, str.length - suffix.length ) !== -1;
-	};
-
-	/**
-	 * Shortcut method for https://w3c.github.io/webappsec/specs/mixedcontent/#restricts-mixed-content ( for easy overriding in tests )
-	 */
-	pf.restrictsMixedContent = function() {
-		return w.location.protocol === "https:";
-	};
-	/**
-	 * Shortcut method for matchMedia ( for easy overriding in tests )
-	 */
-
-	pf.matchesMedia = function( media ) {
-		return w.matchMedia && w.matchMedia( media ).matches;
-	};
-
-	// Shortcut method for `devicePixelRatio` ( for easy overriding in tests )
-	pf.getDpr = function() {
-		return ( w.devicePixelRatio || 1 );
-	};
-
-	/**
-	 * Get width in css pixel value from a "length" value
-	 * http://dev.w3.org/csswg/css-values-3/#length-value
-	 */
-	pf.getWidthFromLength = function( length ) {
-		// If a length is specified and doesn’t contain a percentage, and it is greater than 0 or using `calc`, use it. Else, use the `100vw` default.
-		length = length && length.indexOf( "%" ) > -1 === false && ( parseFloat( length ) > 0 || length.indexOf( "calc(" ) > -1 ) ? length : "100vw";
-
-		/**
-		 * If length is specified in  `vw` units, use `%` instead since the div we’re measuring
-		 * is injected at the top of the document.
-		 *
-		 * TODO: maybe we should put this behind a feature test for `vw`?
-		 */
-		length = length.replace( "vw", "%" );
-
-		// Create a cached element for getting length value widths
-		if ( !pf.lengthEl ) {
-			pf.lengthEl = doc.createElement( "div" );
-
-			// Positioning styles help prevent padding/margin/width on `html` or `body` from throwing calculations off.
-			pf.lengthEl.style.cssText = "border:0;display:block;font-size:1em;left:0;margin:0;padding:0;position:absolute;visibility:hidden";
-		}
-
-		pf.lengthEl.style.width = length;
-
-		doc.body.appendChild(pf.lengthEl);
-
-		// Add a class, so that everyone knows where this element comes from
-		pf.lengthEl.className = "helper-from-picturefill-js";
-
-		if ( pf.lengthEl.offsetWidth <= 0 ) {
-			// Something has gone wrong. `calc()` is in use and unsupported, most likely. Default to `100vw` (`100%`, for broader support.):
-			pf.lengthEl.style.width = doc.documentElement.offsetWidth + "px";
-		}
-
-		var offsetWidth = pf.lengthEl.offsetWidth;
-
-		doc.body.removeChild( pf.lengthEl );
-
-		return offsetWidth;
-	};
-
-	// container of supported mime types that one might need to qualify before using
-	pf.types =  {};
-
-	// Add support for standard mime types
-	pf.types[ "image/jpeg" ] = true;
-	pf.types[ "image/gif" ] = true;
-	pf.types[ "image/png" ] = true;
-
-	// test svg support
-	pf.types[ "image/svg+xml" ] = doc.implementation.hasFeature("http://www.w3.org/TR/SVG11/feature#Image", "1.1");
-
-	// test webp support, only when the markup calls for it
-	pf.types[ "image/webp" ] = function() {
-		// based on Modernizr's lossless img-webp test
-		// note: asynchronous
-		var type = "image/webp";
-
-		image.onerror = function() {
-			pf.types[ type ] = false;
-			picturefill();
-		};
-		image.onload = function() {
-			pf.types[ type ] = image.width === 1;
-			picturefill();
-		};
-		image.src = "data:image/webp;base64,UklGRh4AAABXRUJQVlA4TBEAAAAvAAAAAAfQ//73v/+BiOh/AAA=";
-	};
-
-	/**
-	 * Takes a source element and checks if its type attribute is present and if so, supported
-	 * Note: for type tests that require a async logic,
-	 * you can define them as a function that'll run only if that type needs to be tested. Just make the test function call picturefill again when it is complete.
-	 * see the async webp test above for example
-	 */
-	pf.verifyTypeSupport = function( source ) {
-		var type = source.getAttribute( "type" );
-		// if type attribute exists, return test result, otherwise return true
-		if ( type === null || type === "" ) {
-			return true;
-		} else {
-			// if the type test is a function, run it and return "pending" status. The function will rerun picturefill on pending elements once finished.
-			if ( typeof( pf.types[ type ] ) === "function" ) {
-				pf.types[ type ]();
-				return "pending";
-			} else {
-				return pf.types[ type ];
-			}
-		}
-	};
-
-	// Parses an individual `size` and returns the length, and optional media query
-	pf.parseSize = function( sourceSizeStr ) {
-		var match = /(\([^)]+\))?\s*(.+)/g.exec( sourceSizeStr );
-		return {
-			media: match && match[1],
-			length: match && match[2]
-		};
-	};
-
-	// Takes a string of sizes and returns the width in pixels as a number
-	pf.findWidthFromSourceSize = function( sourceSizeListStr ) {
-		// Split up source size list, ie ( max-width: 30em ) 100%, ( max-width: 50em ) 50%, 33%
-		//                            or (min-width:30em) calc(30% - 15px)
-		var sourceSizeList = pf.trim( sourceSizeListStr ).split( /\s*,\s*/ ),
-			winningLength;
-
-		for ( var i = 0, len = sourceSizeList.length; i < len; i++ ) {
-			// Match <media-condition>? length, ie ( min-width: 50em ) 100%
-			var sourceSize = sourceSizeList[ i ],
-				// Split "( min-width: 50em ) 100%" into separate strings
-				parsedSize = pf.parseSize( sourceSize ),
-				length = parsedSize.length,
-				media = parsedSize.media;
-
-			if ( !length ) {
-				continue;
-			}
-			if ( !media || pf.matchesMedia( media ) ) {
-				// if there is no media query or it matches, choose this as our winning length
-				// and end algorithm
-				winningLength = length;
-				break;
-			}
-		}
-
-		// pass the length to a method that can properly determine length
-		// in pixels based on these formats: http://dev.w3.org/csswg/css-values-3/#length-value
-		return pf.getWidthFromLength( winningLength );
-	};
-
-	pf.parseSrcset = function( srcset ) {
-		/**
-		 * A lot of this was pulled from Boris Smus’ parser for the now-defunct WHATWG `srcset`
-		 * https://github.com/borismus/srcset-polyfill/blob/master/js/srcset-info.js
-		 *
-		 * 1. Let input (`srcset`) be the value passed to this algorithm.
-		 * 2. Let position be a pointer into input, initially pointing at the start of the string.
-		 * 3. Let raw candidates be an initially empty ordered list of URLs with associated
-		 *    unparsed descriptors. The order of entries in the list is the order in which entries
-		 *    are added to the list.
-		 */
-		var candidates = [];
-
-		while ( srcset !== "" ) {
-			srcset = srcset.replace( /^\s+/g, "" );
-
-			// 5. Collect a sequence of characters that are not space characters, and let that be url.
-			var pos = srcset.search(/\s/g),
-				url, descriptor = null;
-
-			if ( pos !== -1 ) {
-				url = srcset.slice( 0, pos );
-
-				var last = url.slice(-1);
-
-				// 6. If url ends with a U+002C COMMA character (,), remove that character from url
-				// and let descriptors be the empty string. Otherwise, follow these substeps
-				// 6.1. If url is empty, then jump to the step labeled descriptor parser.
-
-				if ( last === "," || url === "" ) {
-					url = url.replace( /,+$/, "" );
-					descriptor = "";
-				}
-				srcset = srcset.slice( pos + 1 );
-
-				// 6.2. Collect a sequence of characters that are not U+002C COMMA characters (,), and
-				// let that be descriptors.
-				if ( descriptor === null ) {
-					var descpos = srcset.indexOf( "," );
-					if ( descpos !== -1 ) {
-						descriptor = srcset.slice( 0, descpos );
-						srcset = srcset.slice( descpos + 1 );
-					} else {
-						descriptor = srcset;
-						srcset = "";
-					}
-				}
-			} else {
-				url = srcset;
-				srcset = "";
-			}
-
-			// 7. Add url to raw candidates, associated with descriptors.
-			if ( url || descriptor ) {
-				candidates.push({
-					url: url,
-					descriptor: descriptor
-				});
-			}
-		}
-		return candidates;
-	};
-
-	pf.parseDescriptor = function( descriptor, sizesattr ) {
-		// 11. Descriptor parser: Let candidates be an initially empty source set. The order of entries in the list
-		// is the order in which entries are added to the list.
-		var sizes = sizesattr || "100vw",
-			sizeDescriptor = descriptor && descriptor.replace( /(^\s+|\s+$)/g, "" ),
-			widthInCssPixels = pf.findWidthFromSourceSize( sizes ),
-			resCandidate;
-
-			if ( sizeDescriptor ) {
-				var splitDescriptor = sizeDescriptor.split(" ");
-
-				for (var i = splitDescriptor.length - 1; i >= 0; i--) {
-					var curr = splitDescriptor[ i ],
-						lastchar = curr && curr.slice( curr.length - 1 );
-
-					if ( ( lastchar === "h" || lastchar === "w" ) && !pf.sizesSupported ) {
-						resCandidate = parseFloat( ( parseInt( curr, 10 ) / widthInCssPixels ) );
-					} else if ( lastchar === "x" ) {
-						var res = curr && parseFloat( curr, 10 );
-						resCandidate = res && !isNaN( res ) ? res : 1;
-					}
-				}
-			}
-		return resCandidate || 1;
-	};
-
-	/**
-	 * Takes a srcset in the form of url/
-	 * ex. "images/pic-medium.png 1x, images/pic-medium-2x.png 2x" or
-	 *     "images/pic-medium.png 400w, images/pic-medium-2x.png 800w" or
-	 *     "images/pic-small.png"
-	 * Get an array of image candidates in the form of
-	 *      {url: "/foo/bar.png", resolution: 1}
-	 * where resolution is http://dev.w3.org/csswg/css-values-3/#resolution-value
-	 * If sizes is specified, resolution is calculated
-	 */
-	pf.getCandidatesFromSourceSet = function( srcset, sizes ) {
-		var candidates = pf.parseSrcset( srcset ),
-			formattedCandidates = [];
-
-		for ( var i = 0, len = candidates.length; i < len; i++ ) {
-			var candidate = candidates[ i ];
-
-			formattedCandidates.push({
-				url: candidate.url,
-				resolution: pf.parseDescriptor( candidate.descriptor, sizes )
-			});
-		}
-		return formattedCandidates;
-	};
-
-	/**
-	 * if it's an img element and it has a srcset property,
-	 * we need to remove the attribute so we can manipulate src
-	 * (the property's existence infers native srcset support, and a srcset-supporting browser will prioritize srcset's value over our winning picture candidate)
-	 * this moves srcset's value to memory for later use and removes the attr
-	 */
-	pf.dodgeSrcset = function( img ) {
-		if ( img.srcset ) {
-			img[ pf.ns ].srcset = img.srcset;
-			img.removeAttribute( "srcset" );
-		}
-	};
-
-	// Accept a source or img element and process its srcset and sizes attrs
-	pf.processSourceSet = function( el ) {
-		var srcset = el.getAttribute( "srcset" ),
-			sizes = el.getAttribute( "sizes" ),
-			candidates = [];
-
-		// if it's an img element, use the cached srcset property (defined or not)
-		if ( el.nodeName.toUpperCase() === "IMG" && el[ pf.ns ] && el[ pf.ns ].srcset ) {
-			srcset = el[ pf.ns ].srcset;
-		}
-
-		if ( srcset ) {
-			candidates = pf.getCandidatesFromSourceSet( srcset, sizes );
-		}
-		return candidates;
-	};
-
-	pf.applyBestCandidate = function( candidates, picImg ) {
-		var candidate,
-			length,
-			bestCandidate;
-
-		candidates.sort( pf.ascendingSort );
-
-		length = candidates.length;
-		bestCandidate = candidates[ length - 1 ];
-
-		for ( var i = 0; i < length; i++ ) {
-			candidate = candidates[ i ];
-			if ( candidate.resolution >= pf.getDpr() ) {
-				bestCandidate = candidate;
-				break;
-			}
-		}
-
-		if ( bestCandidate && !pf.endsWith( picImg.src, bestCandidate.url ) ) {
-			if ( pf.restrictsMixedContent() && bestCandidate.url.substr(0, "http:".length).toLowerCase() === "http:" ) {
-				if ( typeof console !== undefined ) {
-					console.warn( "Blocked mixed content image " + bestCandidate.url );
-				}
-			} else {
-				picImg.src = bestCandidate.url;
-				// currentSrc attribute and property to match
-				// http://picture.responsiveimages.org/#the-img-element
-				picImg.currentSrc = picImg.src;
-
-				var style = picImg.style || {},
-					WebkitBackfaceVisibility = "webkitBackfaceVisibility" in style,
-					currentZoom = style.zoom;
-
-				if (WebkitBackfaceVisibility) { // See: https://github.com/scottjehl/picturefill/issues/332
-					style.zoom = ".999";
-
-					WebkitBackfaceVisibility = picImg.offsetWidth;
-
-					style.zoom = currentZoom;
-				}
-			}
-		}
-	};
-
-	pf.ascendingSort = function( a, b ) {
-		return a.resolution - b.resolution;
-	};
-
-	/**
-	 * In IE9, <source> elements get removed if they aren't children of
-	 * video elements. Thus, we conditionally wrap source elements
-	 * using <!--[if IE 9]><video style="display: none;"><![endif]-->
-	 * and must account for that here by moving those source elements
-	 * back into the picture element.
-	 */
-	pf.removeVideoShim = function( picture ) {
-		var videos = picture.getElementsByTagName( "video" );
-		if ( videos.length ) {
-			var video = videos[ 0 ],
-				vsources = video.getElementsByTagName( "source" );
-			while ( vsources.length ) {
-				picture.insertBefore( vsources[ 0 ], video );
-			}
-			// Remove the video element once we're finished removing its children
-			video.parentNode.removeChild( video );
-		}
-	};
-
-	/**
-	 * Find all `img` elements, and add them to the candidate list if they have
-	 * a `picture` parent, a `sizes` attribute in basic `srcset` supporting browsers,
-	 * a `srcset` attribute at all, and they haven’t been evaluated already.
-	 */
-	pf.getAllElements = function() {
-		var elems = [],
-			imgs = doc.getElementsByTagName( "img" );
-
-		for ( var h = 0, len = imgs.length; h < len; h++ ) {
-			var currImg = imgs[ h ];
-
-			if ( currImg.parentNode.nodeName.toUpperCase() === "PICTURE" ||
-			( currImg.getAttribute( "srcset" ) !== null ) || currImg[ pf.ns ] && currImg[ pf.ns ].srcset !== null ) {
-				elems.push( currImg );
-			}
-		}
-		return elems;
-	};
-
-	pf.getMatch = function( img, picture ) {
-		var sources = picture.childNodes,
-			match;
-
-		// Go through each child, and if they have media queries, evaluate them
-		for ( var j = 0, slen = sources.length; j < slen; j++ ) {
-			var source = sources[ j ];
-
-			// ignore non-element nodes
-			if ( source.nodeType !== 1 ) {
-				continue;
-			}
-
-			// Hitting the `img` element that started everything stops the search for `sources`.
-			// If no previous `source` matches, the `img` itself is evaluated later.
-			if ( source === img ) {
-				return match;
-			}
-
-			// ignore non-`source` nodes
-			if ( source.nodeName.toUpperCase() !== "SOURCE" ) {
-				continue;
-			}
-			// if it's a source element that has the `src` property set, throw a warning in the console
-			if ( source.getAttribute( "src" ) !== null && typeof console !== undefined ) {
-				console.warn("The `src` attribute is invalid on `picture` `source` element; instead, use `srcset`.");
-			}
-
-			var media = source.getAttribute( "media" );
-
-			// if source does not have a srcset attribute, skip
-			if ( !source.getAttribute( "srcset" ) ) {
-				continue;
-			}
-
-			// if there's no media specified, OR w.matchMedia is supported
-			if ( ( !media || pf.matchesMedia( media ) ) ) {
-				var typeSupported = pf.verifyTypeSupport( source );
-
-				if ( typeSupported === true ) {
-					match = source;
-					break;
-				} else if ( typeSupported === "pending" ) {
-					return false;
-				}
-			}
-		}
-
-		return match;
-	};
-
-	function picturefill( opt ) {
-		var elements,
-			element,
-			parent,
-			firstMatch,
-			candidates,
-			options = opt || {};
-
-		elements = options.elements || pf.getAllElements();
-
-		// Loop through all elements
-		for ( var i = 0, plen = elements.length; i < plen; i++ ) {
-			element = elements[ i ];
-			parent = element.parentNode;
-			firstMatch = undefined;
-			candidates = undefined;
-
-			// immediately skip non-`img` nodes
-			if ( element.nodeName.toUpperCase() !== "IMG" ) {
-				continue;
-			}
-
-			// expando for caching data on the img
-			if ( !element[ pf.ns ] ) {
-				element[ pf.ns ] = {};
-			}
-
-			// if the element has already been evaluated, skip it unless
-			// `options.reevaluate` is set to true ( this, for example,
-			// is set to true when running `picturefill` on `resize` ).
-			if ( !options.reevaluate && element[ pf.ns ].evaluated ) {
-				continue;
-			}
-
-			// if `img` is in a `picture` element
-			if ( parent.nodeName.toUpperCase() === "PICTURE" ) {
-
-				// IE9 video workaround
-				pf.removeVideoShim( parent );
-
-				// return the first match which might undefined
-				// returns false if there is a pending source
-				// TODO the return type here is brutal, cleanup
-				firstMatch = pf.getMatch( element, parent );
-
-				// if any sources are pending in this picture due to async type test(s)
-				// remove the evaluated attr and skip for now ( the pending test will
-				// rerun picturefill on this element when complete)
-				if ( firstMatch === false ) {
-					continue;
-				}
-			} else {
-				firstMatch = undefined;
-			}
-
-			// Cache and remove `srcset` if present and we’re going to be doing `picture`/`srcset`/`sizes` polyfilling to it.
-			if ( parent.nodeName.toUpperCase() === "PICTURE" ||
-			( element.srcset && !pf.srcsetSupported ) ||
-			( !pf.sizesSupported && ( element.srcset && element.srcset.indexOf("w") > -1 ) ) ) {
-				pf.dodgeSrcset( element );
-			}
-
-			if ( firstMatch ) {
-				candidates = pf.processSourceSet( firstMatch );
-				pf.applyBestCandidate( candidates, element );
-			} else {
-				// No sources matched, so we’re down to processing the inner `img` as a source.
-				candidates = pf.processSourceSet( element );
-
-				if ( element.srcset === undefined || element[ pf.ns ].srcset ) {
-					// Either `srcset` is completely unsupported, or we need to polyfill `sizes` functionality.
-					pf.applyBestCandidate( candidates, element );
-				} // Else, resolution-only `srcset` is supported natively.
-			}
-
-			// set evaluated to true to avoid unnecessary reparsing
-			element[ pf.ns ].evaluated = true;
-		}
-	}
-
-	/**
-	 * Sets up picture polyfill by polling the document and running
-	 * the polyfill every 250ms until the document is ready.
-	 * Also attaches picturefill on resize
-	 */
-	function runPicturefill() {
-		picturefill();
-		var intervalId = setInterval( function() {
-			// When the document has finished loading, stop checking for new images
-			// https://github.com/ded/domready/blob/master/ready.js#L15
-			picturefill();
-			if ( /^loaded|^i|^c/.test( doc.readyState ) ) {
-				clearInterval( intervalId );
-				return;
-			}
-		}, 250 );
-
-		function checkResize() {
-			var resizeThrottle;
-
-			if ( !w._picturefillWorking ) {
-				w._picturefillWorking = true;
-				w.clearTimeout( resizeThrottle );
-				resizeThrottle = w.setTimeout( function() {
-					picturefill({ reevaluate: true });
-					w._picturefillWorking = false;
-				}, 60 );
-			}
-		}
-
-		if ( w.addEventListener ) {
-			w.addEventListener( "resize", checkResize, false );
-		} else if ( w.attachEvent ) {
-			w.attachEvent( "onresize", checkResize );
-		}
-	}
-
-	runPicturefill();
-
-	/* expose methods for testing */
-	picturefill._ = pf;
-
-	/* expose picturefill */
-	if ( typeof module === "object" && typeof module.exports === "object" ) {
-		// CommonJS, just export
-		module.exports = picturefill;
-	} else if ( typeof define === "function" && define.amd ) {
-		// AMD support
-		define( function() { return picturefill; } );
-	} else if ( typeof w === "object" ) {
-		// If no AMD and we are in the browser, attach to window
-		w.picturefill = picturefill;
-	}
-
-} )( window, window.document, new window.Image() );
diff --git a/core/assets/vendor/picturefill/picturefill.min.js b/core/assets/vendor/picturefill/picturefill.min.js
new file mode 100644
index 0000000..7c0346b
--- /dev/null
+++ b/core/assets/vendor/picturefill/picturefill.min.js
@@ -0,0 +1,4 @@
+/*! Picturefill - v2.2.1 - 2015-02-03
+* http://scottjehl.github.io/picturefill
+* Copyright (c) 2015 https://github.com/scottjehl/picturefill/blob/master/Authors.txt; Licensed MIT */
+window.matchMedia||(window.matchMedia=function(){"use strict";var a=window.styleMedia||window.media;if(!a){var b=document.createElement("style"),c=document.getElementsByTagName("script")[0],d=null;b.type="text/css",b.id="matchmediajs-test",c.parentNode.insertBefore(b,c),d="getComputedStyle"in window&&window.getComputedStyle(b,null)||b.currentStyle,a={matchMedium:function(a){var c="@media "+a+"{ #matchmediajs-test { width: 1px; } }";return b.styleSheet?b.styleSheet.cssText=c:b.textContent=c,"1px"===d.width}}}return function(b){return{matches:a.matchMedium(b||"all"),media:b||"all"}}}()),function(a,b,c){"use strict";function d(a){var b,c,d,e,g,h=a||{};b=h.elements||f.getAllElements();for(var i=0,j=b.length;j>i;i++)if(c=b[i],d=c.parentNode,e=void 0,g=void 0,"IMG"===c.nodeName.toUpperCase()&&(c[f.ns]||(c[f.ns]={}),h.reevaluate||!c[f.ns].evaluated)){if("PICTURE"===d.nodeName.toUpperCase()){if(f.removeVideoShim(d),e=f.getMatch(c,d),e===!1)continue}else e=void 0;("PICTURE"===d.nodeName.toUpperCase()||c.srcset&&!f.srcsetSupported||!f.sizesSupported&&c.srcset&&c.srcset.indexOf("w")>-1)&&f.dodgeSrcset(c),e?(g=f.processSourceSet(e),f.applyBestCandidate(g,c)):(g=f.processSourceSet(c),(void 0===c.srcset||c[f.ns].srcset)&&f.applyBestCandidate(g,c)),c[f.ns].evaluated=!0}}function e(){function c(){var b;a._picturefillWorking||(a._picturefillWorking=!0,a.clearTimeout(b),b=a.setTimeout(function(){d({reevaluate:!0}),a._picturefillWorking=!1},60))}d();var e=setInterval(function(){return d(),/^loaded|^i|^c/.test(b.readyState)?void clearInterval(e):void 0},250);a.addEventListener?a.addEventListener("resize",c,!1):a.attachEvent&&a.attachEvent("onresize",c)}if(a.HTMLPictureElement)return void(a.picturefill=function(){});b.createElement("picture");var f={};f.ns="picturefill",function(){f.srcsetSupported="srcset"in c,f.sizesSupported="sizes"in c}(),f.trim=function(a){return a.trim?a.trim():a.replace(/^\s+|\s+$/g,"")},f.endsWith=function(a,b){return a.endsWith?a.endsWith(b):-1!==a.indexOf(b,a.length-b.length)},f.restrictsMixedContent=function(){return"https:"===a.location.protocol},f.matchesMedia=function(b){return a.matchMedia&&a.matchMedia(b).matches},f.getDpr=function(){return a.devicePixelRatio||1},f.getWidthFromLength=function(a){a=a&&a.indexOf("%")>-1==!1&&(parseFloat(a)>0||a.indexOf("calc(")>-1)?a:"100vw",a=a.replace("vw","%"),f.lengthEl||(f.lengthEl=b.createElement("div"),f.lengthEl.style.cssText="border:0;display:block;font-size:1em;left:0;margin:0;padding:0;position:absolute;visibility:hidden"),f.lengthEl.style.width=a,b.body.appendChild(f.lengthEl),f.lengthEl.className="helper-from-picturefill-js",f.lengthEl.offsetWidth<=0&&(f.lengthEl.style.width=b.documentElement.offsetWidth+"px");var c=f.lengthEl.offsetWidth;return b.body.removeChild(f.lengthEl),c},f.types={},f.types["image/jpeg"]=!0,f.types["image/gif"]=!0,f.types["image/png"]=!0,f.types["image/svg+xml"]=b.implementation.hasFeature("http://www.w3.org/TR/SVG11/feature#Image","1.1"),f.types["image/webp"]=function(){var a="image/webp";c.onerror=function(){f.types[a]=!1,d()},c.onload=function(){f.types[a]=1===c.width,d()},c.src="data:image/webp;base64,UklGRh4AAABXRUJQVlA4TBEAAAAvAAAAAAfQ//73v/+BiOh/AAA="},f.verifyTypeSupport=function(a){var b=a.getAttribute("type");return null===b||""===b?!0:"function"==typeof f.types[b]?(f.types[b](),"pending"):f.types[b]},f.parseSize=function(a){var b=/(\([^)]+\))?\s*(.+)/g.exec(a);return{media:b&&b[1],length:b&&b[2]}},f.findWidthFromSourceSize=function(a){for(var b,c=f.trim(a).split(/\s*,\s*/),d=0,e=c.length;e>d;d++){var g=c[d],h=f.parseSize(g),i=h.length,j=h.media;if(i&&(!j||f.matchesMedia(j))){b=i;break}}return f.getWidthFromLength(b)},f.parseSrcset=function(a){for(var b=[];""!==a;){a=a.replace(/^\s+/g,"");var c,d=a.search(/\s/g),e=null;if(-1!==d){c=a.slice(0,d);var f=c.slice(-1);if((","===f||""===c)&&(c=c.replace(/,+$/,""),e=""),a=a.slice(d+1),null===e){var g=a.indexOf(",");-1!==g?(e=a.slice(0,g),a=a.slice(g+1)):(e=a,a="")}}else c=a,a="";(c||e)&&b.push({url:c,descriptor:e})}return b},f.parseDescriptor=function(a,b){var c,d=b||"100vw",e=a&&a.replace(/(^\s+|\s+$)/g,""),g=f.findWidthFromSourceSize(d);if(e)for(var h=e.split(" "),i=h.length-1;i>=0;i--){var j=h[i],k=j&&j.slice(j.length-1);if("h"!==k&&"w"!==k||f.sizesSupported){if("x"===k){var l=j&&parseFloat(j,10);c=l&&!isNaN(l)?l:1}}else c=parseFloat(parseInt(j,10)/g)}return c||1},f.getCandidatesFromSourceSet=function(a,b){for(var c=f.parseSrcset(a),d=[],e=0,g=c.length;g>e;e++){var h=c[e];d.push({url:h.url,resolution:f.parseDescriptor(h.descriptor,b)})}return d},f.dodgeSrcset=function(a){a.srcset&&(a[f.ns].srcset=a.srcset,a.removeAttribute("srcset"))},f.processSourceSet=function(a){var b=a.getAttribute("srcset"),c=a.getAttribute("sizes"),d=[];return"IMG"===a.nodeName.toUpperCase()&&a[f.ns]&&a[f.ns].srcset&&(b=a[f.ns].srcset),b&&(d=f.getCandidatesFromSourceSet(b,c)),d},f.applyBestCandidate=function(a,b){var c,d,e;a.sort(f.ascendingSort),d=a.length,e=a[d-1];for(var g=0;d>g;g++)if(c=a[g],c.resolution>=f.getDpr()){e=c;break}if(e&&!f.endsWith(b.src,e.url))if(f.restrictsMixedContent()&&"http:"===e.url.substr(0,"http:".length).toLowerCase())void 0!==typeof console&&console.warn("Blocked mixed content image "+e.url);else{b.src=e.url,b.currentSrc=b.src;var h=b.style||{},i="webkitBackfaceVisibility"in h,j=h.zoom;i&&(h.zoom=".999",i=b.offsetWidth,h.zoom=j)}},f.ascendingSort=function(a,b){return a.resolution-b.resolution},f.removeVideoShim=function(a){var b=a.getElementsByTagName("video");if(b.length){for(var c=b[0],d=c.getElementsByTagName("source");d.length;)a.insertBefore(d[0],c);c.parentNode.removeChild(c)}},f.getAllElements=function(){for(var a=[],c=b.getElementsByTagName("img"),d=0,e=c.length;e>d;d++){var g=c[d];("PICTURE"===g.parentNode.nodeName.toUpperCase()||null!==g.getAttribute("srcset")||g[f.ns]&&null!==g[f.ns].srcset)&&a.push(g)}return a},f.getMatch=function(a,b){for(var c,d=b.childNodes,e=0,g=d.length;g>e;e++){var h=d[e];if(1===h.nodeType){if(h===a)return c;if("SOURCE"===h.nodeName.toUpperCase()){null!==h.getAttribute("src")&&void 0!==typeof console&&console.warn("The `src` attribute is invalid on `picture` `source` element; instead, use `srcset`.");var i=h.getAttribute("media");if(h.getAttribute("srcset")&&(!i||f.matchesMedia(i))){var j=f.verifyTypeSupport(h);if(j===!0){c=h;break}if("pending"===j)return!1}}}}return c},e(),d._=f,"object"==typeof module&&"object"==typeof module.exports?module.exports=d:"function"==typeof define&&define.amd?define(function(){return d}):"object"==typeof a&&(a.picturefill=d)}(window,window.document,new window.Image);
diff --git a/core/core.libraries.yml b/core/core.libraries.yml
index 769ac28..9c29dda 100644
--- a/core/core.libraries.yml
+++ b/core/core.libraries.yml
@@ -837,10 +837,10 @@ picturefill:
   version: 2.2.1
   license:
     name: MIT
-    url: https://github.com/scottjehl/picturefill/blob/2.2.0/LICENSE
+    url: https://github.com/scottjehl/picturefill/blob/2.2/LICENSE
     gpl-compatible: true
   js:
-    assets/vendor/picturefill/picturefill.js: { weight: -10 }
+    assets/vendor/picturefill/picturefill.min.js: { weight: -10, minified: true }
   dependencies:
     - core/matchmedia