text: //download.js v4.21, by dandavis; 2008-2018. [MIT] see http://danml.com/download.html for tests/usage
  // v1 landed a FF+Chrome compatible way of downloading strings to local un-named files, upgraded to use a hidden frame and optional mime
  // v2 added named files via a[download], msSaveBlob, IE (10+) support, and window.URL support for larger+faster saves than dataURLs
  // v3 added dataURL and Blob Input, bind-toggle arity, and legacy dataURL fallback was improved with force-download mime and base64 support. 3.1 improved safari handling.
  // v4 adds AMD/UMD, commonJS, and plain browser support
  // v4.1 adds url download capability via solo URL argument (same domain/CORS only)
  // v4.2 adds semantic variable names, long (over 2MB) dataURL support, and hidden by default temp anchors
  // https://github.com/rndme/download
  
  (function (root, factory) {
  	if (typeof define === 'function' && define.amd) {
  		// AMD. Register as an anonymous module.
  		define([], factory);
  	} else if (typeof exports === 'object') {
  		// Node. Does not work with strict CommonJS, but
  		// only CommonJS-like environments that support module.exports,
  		// like Node.
  		module.exports = factory();
  	} else {
  		// Browser globals (root is window)
  		root.download = factory();
  	}
  }(this, function () {
  
  	return function download(data, strFileName, strMimeType) {
  
  		var self = window, // this script is only for browsers anyway...
  			defaultMime = "application/octet-stream", // this default mime also triggers iframe downloads
  			mimeType = strMimeType || defaultMime,
  			payload = data,
  			url = !strFileName && !strMimeType && payload,
  			anchor = document.createElement("a"),
  			toString = function(a){return String(a);},
  			myBlob = (self.Blob || self.MozBlob || self.WebKitBlob || toString),
  			fileName = strFileName || "download",
  			blob,
  			reader;
  		myBlob= myBlob.call ? myBlob.bind(self) : Blob ;
  
  		if(String(this)==="true"){ //reverse arguments, allowing download.bind(true, "text/xml", "export.xml") to act as a callback
  			payload=[payload, mimeType];
  			mimeType=payload[0];
  			payload=payload[1];
  		}
  
  
  		if(url && url.length< 2048){ // if no filename and no mime, assume a url was passed as the only argument
  			fileName = url.split("/").pop().split("?")[0];
  			anchor.href = url; // assign href prop to temp anchor
  			if(anchor.href.indexOf(url) !== -1){ // if the browser determines that it's a potentially valid url path:
  				var ajax=new XMLHttpRequest();
  				ajax.open( "GET", url, true);
  				ajax.responseType = 'blob';
  				ajax.onload= function(e){
  					download(e.target.response, fileName, defaultMime);
  				};
  				setTimeout(function(){ ajax.send();}, 0); // allows setting custom ajax headers using the return:
  				return ajax;
  			} // end if valid url?
  		} // end if url?
  
  
  		//go ahead and download dataURLs right away
  		if(/^data:([\w+-]+\/[\w+.-]+)?[,;]/.test(payload)){
  
  			if(payload.length > (1024*1024*1.999) && myBlob !== toString ){
  				payload=dataUrlToBlob(payload);
  				mimeType=payload.type || defaultMime;
  			}else{
  				return navigator.msSaveBlob ?  // IE10 can't do a[download], only Blobs:
  					navigator.msSaveBlob(dataUrlToBlob(payload), fileName) :
  					saver(payload) ; // everyone else can save dataURLs un-processed
  			}
  
  		}else{//not data url, is it a string with special needs?
  			if(/([\x80-\xff])/.test(payload)){
  				var i=0, tempUiArr= new Uint8Array(payload.length), mx=tempUiArr.length;
  				for(i;i<mx;++i) tempUiArr[i]= payload.charCodeAt(i);
  				payload=new myBlob([tempUiArr], {type: mimeType});
  			}
  		}
  		blob = payload instanceof myBlob ?
  			payload :
  			new myBlob([payload], {type: mimeType}) ;
  
  
  		function dataUrlToBlob(strUrl) {
  			var parts= strUrl.split(/[:;,]/),
  				type= parts[1],
  				indexDecoder = strUrl.indexOf("charset")>0 ? 3: 2,
  				decoder= parts[indexDecoder] == "base64" ? atob : decodeURIComponent,
  				binData= decoder( parts.pop() ),
  				mx= binData.length,
  				i= 0,
  				uiArr= new Uint8Array(mx);
  
  			for(i;i<mx;++i) uiArr[i]= binData.charCodeAt(i);
  
  			return new myBlob([uiArr], {type: type});
  		}
  
  		function saver(url, winMode){
  
  			if ('download' in anchor) { //html5 A[download]
  				anchor.href = url;
  				anchor.setAttribute("download", fileName);
  				anchor.className = "download-js-link";
  				anchor.innerHTML = "downloading...";
  				anchor.style.display = "none";
  				anchor.addEventListener('click', function(e) {
  					e.stopPropagation();
  					this.removeEventListener('click', arguments.callee);
  				});
  				document.body.appendChild(anchor);
  				setTimeout(function() {
  					anchor.click();
  					document.body.removeChild(anchor);
  					if(winMode===true){setTimeout(function(){ self.URL.revokeObjectURL(anchor.href);}, 250 );}
  				}, 66);
  				return true;
  			}
  
  			// handle non-a[download] safari as best we can:
  			if(/(Version)\/(\d+)\.(\d+)(?:\.(\d+))?.*Safari\//.test(navigator.userAgent)) {
  				if(/^data:/.test(url))	url="data:"+url.replace(/^data:([\w\/\-\+]+)/, defaultMime);
  				if(!window.open(url)){ // popup blocked, offer direct download:
  					if(confirm("Displaying New Document\n\nUse Save As... to download, then click back to return to this page.")){ location.href=url; }
  				}
  				return true;
  			}
  
  			//do iframe dataURL download (old ch+FF):
  			var f = document.createElement("iframe");
  			document.body.appendChild(f);
  
  			if(!winMode && /^data:/.test(url)){ // force a mime that will download:
  				url="data:"+url.replace(/^data:([\w\/\-\+]+)/, defaultMime);
  			}
  			f.src=url;
  			setTimeout(function(){ document.body.removeChild(f); }, 333);
  
  		}//end saver
  
  
  
  
  		if (navigator.msSaveBlob) { // IE10+ : (has Blob, but not a[download] or URL)
  			return navigator.msSaveBlob(blob, fileName);
  		}
  
  		if(self.URL){ // simple fast and modern way using Blob and URL:
  			saver(self.URL.createObjectURL(blob), true);
  		}else{
  			// handle non-Blob()+non-URL browsers:
  			if(typeof blob === "string" || blob.constructor===toString ){
  				try{
  					return saver( "data:" +  mimeType   + ";base64,"  +  self.btoa(blob)  );
  				}catch(y){
  					return saver( "data:" +  mimeType   + "," + encodeURIComponent(blob)  );
  				}
  			}
  
  			// Blob but not URL support:
  			reader=new FileReader();
  			reader.onload=function(e){
  				saver(this.result);
  			};
  			reader.readAsDataURL(blob);
  		}
  		return true;
  	}; /* end download() */
  }));