diff --git a/inst/reveal.js-4.6.1/plugin/markdown/markdown.esm.js b/inst/reveal.js-4.6.1/plugin/markdown/markdown.esm.js
new file mode 100644
index 0000000..54cac14
--- /dev/null
+++ b/inst/reveal.js-4.6.1/plugin/markdown/markdown.esm.js
@@ -0,0 +1,7 @@
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v={escape:/^\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/,autolink:/^<(scheme:[^\s\x00-\x1f<>]*|email)>/,url:w,tag:"^comment|^</[a-zA-Z][\\w:-]*\\s*>|^<[a-zA-Z][\\w-]*(?:attribute)*?\\s*/?>|^<\\?[\\s\\S]*?\\?>|^<![a-zA-Z]+\\s[\\s\\S]*?>|^<!\\[CDATA\\[[\\s\\S]*?\\]\\]>",link:/^!?\[(label)\]\(\s*(href)(?:\s+(title))?\s*\)/,reflink:/^!?\[(label)\]\[(ref)\]/,nolink:/^!?\[(ref)\](?:\[\])?/,reflinkSearch:"reflink|nolink(?!\\()",emStrong:{lDelim:/^(?:\*+(?:([punct_])|[^\s*]))|^_+(?:([punct*])|([^\s_]))/,rDelimAst:/^[^_*]*?\_\_[^_*]*?\*[^_*]*?(?=\_\_)|[punct_](\*+)(?=[\s]|$)|[^punct*_\s](\*+)(?=[punct_\s]|$)|[punct_\s](\*+)(?=[^punct*_\s])|[\s](\*+)(?=[punct_])|[punct_](\*+)(?=[punct_])|[^punct*_\s](\*+)(?=[^punct*_\s])/,rDelimUnd:/^[^_*]*?\*\*[^_*]*?\_[^_*]*?(?=\*\*)|[punct*](\_+)(?=[\s]|$)|[^punct*_\s](\_+)(?=[punct*\s]|$)|[punct*\s](\_+)(?=[^punct*_\s])|[\s](\_+)(?=[punct*])|[punct*](\_+)(?=[punct*])/},code:/^(`+)([^`]|[^`][\s\S]*?[^`])\1(?!`)/,br:/^( {2,}|\\)\n(?!\s*$)/,del:w,text:/^(`+|[^`])(?:(?= {2,}\n)|[\s\S]*?(?:(?=[\\<!\[`*_]|\b_|$)|[^ ](?= {2,}\n)))/,punctuation:/^([\spunctuation])/};function E(e){return e.replace(/---/g,"—").replace(/--/g,"–").replace(/(^|[-\u2014/(\[{"\s])'/g,"$1‘").replace(/'/g,"’").replace(/(^|[-\u2014/(\[{\u2018\s])"/g,"$1“").replace(/"/g,"”").replace(/\.{3}/g,"…")}function I(e){let t,n,r="";const s=e.length;for(t=0;t<s;t++)n=e.charCodeAt(t),Math.random()>.5&&(n="x"+n.toString(16)),r+="&#"+n+";";return r}v._punctuation="!\"#$%&'()+\\-.,/:;<=>?@\\[\\]`^{|}~",v.punctuation=u(v.punctuation).replace(/punctuation/g,v._punctuation).getRegex(),v.blockSkip=/\[[^\]]*?\]\([^\)]*?\)|`[^`]*?`|<[^>]*?>/g,v.escapedEmSt=/\\\*|\\_/g,v._comment=u(R._comment).replace("(?:--\x3e|$)","--\x3e").getRegex(),v.emStrong.lDelim=u(v.emStrong.lDelim).replace(/punct/g,v._punctuation).getRegex(),v.emStrong.rDelimAst=u(v.emStrong.rDelimAst,"g").replace(/punct/g,v._punctuation).getRegex(),v.emStrong.rDelimUnd=u(v.emStrong.rDelimUnd,"g").replace(/punct/g,v._punctuation).getRegex(),v._escapes=/\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/g,v._scheme=/[a-zA-Z][a-zA-Z0-9+.-]{1,31}/,v._email=/[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+(@)[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)+(?![-_])/,v.autolink=u(v.autolink).replace("scheme",v._scheme).replace("email",v._email).getRegex(),v._attribute=/\s+[a-zA-Z:_][\w.:-]*(?:\s*=\s*"[^"]*"|\s*=\s*'[^']*'|\s*=\s*[^\s"'=<>`]+)?/,v.tag=u(v.tag).replace("comment",v._comment).replace("attribute",v._attribute).getRegex(),v._label=/(?:\[(?:\\.|[^\[\]\\])*\]|\\.|`[^`]*`|[^\[\]\\`])*?/,v._href=/<(?:\\.|[^\n<>\\])+>|[^\s\x00-\x1f]*/,v._title=/"(?:\\"?|[^"\\])*"|'(?:\\'?|[^'\\])*'|\((?:\\\)?|[^)\\])*\)/,v.link=u(v.link).replace("label",v._label).replace("href",v._href).replace("title",v._title).getRegex(),v.reflink=u(v.reflink).replace("label",v._label).replace("ref",R._label).getRegex(),v.nolink=u(v.nolink).replace("ref",R._label).getRegex(),v.reflinkSearch=u(v.reflinkSearch,"g").replace("reflink",v.reflink).replace("nolink",v.nolink).getRegex(),v.normal=_({},v),v.pedantic=_({},v.normal,{strong:{start:/^__|\*\*/,middle:/^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/,endAst:/\*\*(?!\*)/g,endUnd:/__(?!_)/g},em:{start:/^_|\*/,middle:/^()\*(?=\S)([\s\S]*?\S)\*(?!\*)|^_(?=\S)([\s\S]*?\S)_(?!_)/,endAst:/\*(?!\*)/g,endUnd:/_(?!_)/g},link:u(/^!?\[(label)\]\((.*?)\)/).replace("label",v._label).getRegex(),reflink:u(/^!?\[(label)\]\s*\[([^\]]*)\]/).replace("label",v._label).getRegex()}),v.gfm=_({},v.normal,{escape:u(v.escape).replace("])","~|])").getRegex(),_extended_email:/[A-Za-z0-9._+-]+(@)[a-zA-Z0-9-_]+(?:\.[a-zA-Z0-9-_]*[a-zA-Z0-9])+(?![-_])/,url:/^((?:ftp|https?):\/\/|www\.)(?:[a-zA-Z0-9\-]+\.?)+[^\s<]*|^email/,_backpedal:/(?:[^?!.,:;*_~()&]+|\([^)]*\)|&(?![a-zA-Z0-9]+;$)|[?!.,:;*_~)]+(?!$))+/,del:/^(~~?)(?=[^\s~])([\s\S]*?[^\s~])\1(?=[^~]|$)/,text:/^([`~]+|[^`~])(?:(?= {2,}\n)|(?=[a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-]+@)|[\s\S]*?(?:(?=[\\<!\[`*~_]|\b_|https?:\/\/|ftp:\/\/|www\.|$)|[^ ](?= {2,}\n)|[^a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-](?=[a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-]+@)))/}),v.gfm.url=u(v.gfm.url,"i").replace("email",v.gfm._extended_email).getRegex(),v.breaks=_({},v.gfm,{br:u(v.br).replace("{2,}","*").getRegex(),text:u(v.gfm.text).replace("\\b_","\\b_| {2,}\\n").replace(/\{2,\}/g,"*").getRegex()});class q{constructor(e){this.tokens=[],this.tokens.links=Object.create(null),this.options=e||t,this.options.tokenizer=this.options.tokenizer||new T,this.tokenizer=this.options.tokenizer,this.tokenizer.options=this.options,this.tokenizer.lexer=this,this.inlineQueue=[],this.state={inLink:!1,inRawBlock:!1,top:!0};const n={block:R.normal,inline:v.normal};this.options.pedantic?(n.block=R.pedantic,n.inline=v.pedantic):this.options.gfm&&(n.block=R.gfm,this.options.breaks?n.inline=v.breaks:n.inline=v.gfm),this.tokenizer.rules=n}static get rules(){return{block:R,inline:v}}static lex(e,t){return new q(t).lex(e)}static lexInline(e,t){return new q(t).inlineTokens(e)}lex(e){let t;for(e=e.replace(/\r\n|\r/g,"\n").replace(/\t/g,"    "),this.blockTokens(e,this.tokens);t=this.inlineQueue.shift();)this.inlineTokens(t.src,t.tokens);return this.tokens}blockTokens(e,t=[]){let n,r,s,i;for(this.options.pedantic&&(e=e.replace(/^ +$/gm,""));e;)if(!(this.options.extensions&&this.options.extensions.block&&this.options.extensions.block.some((r=>!!(n=r.call({lexer:this},e,t))&&(e=e.substring(n.raw.length),t.push(n),!0)))))if(n=this.tokenizer.space(e))e=e.substring(n.raw.length),1===n.raw.length&&t.length>0?t[t.length-1].raw+="\n":t.push(n);else if(n=this.tokenizer.code(e))e=e.substring(n.raw.length),r=t[t.length-1],!r||"paragraph"!==r.type&&"text"!==r.type?t.push(n):(r.raw+="\n"+n.raw,r.text+="\n"+n.text,this.inlineQueue[this.inlineQueue.length-1].src=r.text);else if(n=this.tokenizer.fences(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.heading(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.hr(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.blockquote(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.list(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.html(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.def(e))e=e.substring(n.raw.length),r=t[t.length-1],!r||"paragraph"!==r.type&&"text"!==r.type?this.tokens.links[n.tag]||(this.tokens.links[n.tag]={href:n.href,title:n.title}):(r.raw+="\n"+n.raw,r.text+="\n"+n.raw,this.inlineQueue[this.inlineQueue.length-1].src=r.text);else if(n=this.tokenizer.table(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.lheading(e))e=e.substring(n.raw.length),t.push(n);else{if(s=e,this.options.extensions&&this.options.extensions.startBlock){let t=1/0;const n=e.slice(1);let r;this.options.extensions.startBlock.forEach((function(e){r=e.call({lexer:this},n),"number"==typeof r&&r>=0&&(t=Math.min(t,r))})),t<1/0&&t>=0&&(s=e.substring(0,t+1))}if(this.state.top&&(n=this.tokenizer.paragraph(s)))r=t[t.length-1],i&&"paragraph"===r.type?(r.raw+="\n"+n.raw,r.text+="\n"+n.text,this.inlineQueue.pop(),this.inlineQueue[this.inlineQueue.length-1].src=r.text):t.push(n),i=s.length!==e.length,e=e.substring(n.raw.length);else if(n=this.tokenizer.text(e))e=e.substring(n.raw.length),r=t[t.length-1],r&&"text"===r.type?(r.raw+="\n"+n.raw,r.text+="\n"+n.text,this.inlineQueue.pop(),this.inlineQueue[this.inlineQueue.length-1].src=r.text):t.push(n);else if(e){const t="Infinite loop on byte: "+e.charCodeAt(0);if(this.options.silent){console.error(t);break}throw new Error(t)}}return this.state.top=!0,t}inline(e,t){this.inlineQueue.push({src:e,tokens:t})}inlineTokens(e,t=[]){let n,r,s,i,l,a,o=e;if(this.tokens.links){const e=Object.keys(this.tokens.links);if(e.length>0)for(;null!=(i=this.tokenizer.rules.inline.reflinkSearch.exec(o));)e.includes(i[0].slice(i[0].lastIndexOf("[")+1,-1))&&(o=o.slice(0,i.index)+"["+$("a",i[0].length-2)+"]"+o.slice(this.tokenizer.rules.inline.reflinkSearch.lastIndex))}for(;null!=(i=this.tokenizer.rules.inline.blockSkip.exec(o));)o=o.slice(0,i.index)+"["+$("a",i[0].length-2)+"]"+o.slice(this.tokenizer.rules.inline.blockSkip.lastIndex);for(;null!=(i=this.tokenizer.rules.inline.escapedEmSt.exec(o));)o=o.slice(0,i.index)+"++"+o.slice(this.tokenizer.rules.inline.escapedEmSt.lastIndex);for(;e;)if(l||(a=""),l=!1,!(this.options.extensions&&this.options.extensions.inline&&this.options.extensions.inline.some((r=>!!(n=r.call({lexer:this},e,t))&&(e=e.substring(n.raw.length),t.push(n),!0)))))if(n=this.tokenizer.escape(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.tag(e))e=e.substring(n.raw.length),r=t[t.length-1],r&&"text"===n.type&&"text"===r.type?(r.raw+=n.raw,r.text+=n.text):t.push(n);else if(n=this.tokenizer.link(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.reflink(e,this.tokens.links))e=e.substring(n.raw.length),r=t[t.length-1],r&&"text"===n.type&&"text"===r.type?(r.raw+=n.raw,r.text+=n.text):t.push(n);else if(n=this.tokenizer.emStrong(e,o,a))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.codespan(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.br(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.del(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.autolink(e,I))e=e.substring(n.raw.length),t.push(n);else if(this.state.inLink||!(n=this.tokenizer.url(e,I))){if(s=e,this.options.extensions&&this.options.extensions.startInline){let t=1/0;const n=e.slice(1);let r;this.options.extensions.startInline.forEach((function(e){r=e.call({lexer:this},n),"number"==typeof r&&r>=0&&(t=Math.min(t,r))})),t<1/0&&t>=0&&(s=e.substring(0,t+1))}if(n=this.tokenizer.inlineText(s,E))e=e.substring(n.raw.length),"_"!==n.raw.slice(-1)&&(a=n.raw.slice(-1)),l=!0,r=t[t.length-1],r&&"text"===r.type?(r.raw+=n.raw,r.text+=n.text):t.push(n);else if(e){const t="Infinite loop on byte: "+e.charCodeAt(0);if(this.options.silent){console.error(t);break}throw new Error(t)}}else e=e.substring(n.raw.length),t.push(n);return t}}class L{constructor(e){this.options=e||t}code(e,t,n){const r=(t||"").match(/\S*/)[0];if(this.options.highlight){const t=this.options.highlight(e,r);null!=t&&t!==e&&(n=!0,e=t)}return e=e.replace(/\n$/,"")+"\n",r?'<pre><code class="'+this.options.langPrefix+o(r,!0)+'">'+(n?e:o(e,!0))+"</code></pre>\n":"<pre><code>"+(n?e:o(e,!0))+"</code></pre>\n"}blockquote(e){return"<blockquote>\n"+e+"</blockquote>\n"}html(e){return e}heading(e,t,n,r){return this.options.headerIds?"<h"+t+' id="'+this.options.headerPrefix+r.slug(n)+'">'+e+"</h"+t+">\n":"<h"+t+">"+e+"</h"+t+">\n"}hr(){return this.options.xhtml?"<hr/>\n":"<hr>\n"}list(e,t,n){const r=t?"ol":"ul";return"<"+r+(t&&1!==n?' start="'+n+'"':"")+">\n"+e+"</"+r+">\n"}listitem(e){return"<li>"+e+"</li>\n"}checkbox(e){return"<input "+(e?'checked="" ':"")+'disabled="" type="checkbox"'+(this.options.xhtml?" /":"")+"> "}paragraph(e){return"<p>"+e+"</p>\n"}table(e,t){return t&&(t="<tbody>"+t+"</tbody>"),"<table>\n<thead>\n"+e+"</thead>\n"+t+"</table>\n"}tablerow(e){return"<tr>\n"+e+"</tr>\n"}tablecell(e,t){const n=t.header?"th":"td";return(t.align?"<"+n+' align="'+t.align+'">':"<"+n+">")+e+"</"+n+">\n"}strong(e){return"<strong>"+e+"</strong>"}em(e){return"<em>"+e+"</em>"}codespan(e){return"<code>"+e+"</code>"}br(){return this.options.xhtml?"<br/>":"<br>"}del(e){return"<del>"+e+"</del>"}link(e,t,n){if(null===(e=f(this.options.sanitize,this.options.baseUrl,e)))return n;let r='<a href="'+o(e)+'"';return t&&(r+=' title="'+t+'"'),r+=">"+n+"</a>",r}image(e,t,n){if(null===(e=f(this.options.sanitize,this.options.baseUrl,e)))return n;let r='<img src="'+e+'" alt="'+n+'"';return t&&(r+=' title="'+t+'"'),r+=this.options.xhtml?"/>":">",r}text(e){return e}}class C{strong(e){return e}em(e){return e}codespan(e){return e}del(e){return e}html(e){return e}text(e){return e}link(e,t,n){return""+n}image(e,t,n){return""+n}br(){return""}}class Z{constructor(){this.seen={}}serialize(e){return e.toLowerCase().trim().replace(/<[!\/a-z].*?>/gi,"").replace(/[\u2000-\u206F\u2E00-\u2E7F\\'!"#$%&()*+,./:;<=>?@[\]^`{|}~]/g,"").replace(/\s/g,"-")}getNextSafeSlug(e,t){let n=e,r=0;if(this.seen.hasOwnProperty(n)){r=this.seen[e];do{r++,n=e+"-"+r}while(this.seen.hasOwnProperty(n))}return t||(this.seen[e]=r,this.seen[n]=0),n}slug(e,t={}){const n=this.serialize(e);return this.getNextSafeSlug(n,t.dryrun)}}class O{constructor(e){this.options=e||t,this.options.renderer=this.options.renderer||new L,this.renderer=this.options.renderer,this.renderer.options=this.options,this.textRenderer=new C,this.slugger=new Z}static parse(e,t){return new O(t).parse(e)}static parseInline(e,t){return new O(t).parseInline(e)}parse(e,t=!0){let n,r,s,i,l,a,o,c,p,u,g,d,f,k,x,m,b,w,_,y="";const z=e.length;for(n=0;n<z;n++)if(u=e[n],this.options.extensions&&this.options.extensions.renderers&&this.options.extensions.renderers[u.type]&&(_=this.options.extensions.renderers[u.type].call({parser:this},u),!1!==_||!["space","hr","heading","code","table","blockquote","list","html","paragraph","text"].includes(u.type)))y+=_||"";else switch(u.type){case"space":continue;case"hr":y+=this.renderer.hr();continue;case"heading":y+=this.renderer.heading(this.parseInline(u.tokens),u.depth,h(this.parseInline(u.tokens,this.textRenderer)),this.slugger);continue;case"code":y+=this.renderer.code(u.text,u.lang,u.escaped);continue;case"table":for(c="",o="",i=u.header.length,r=0;r<i;r++)o+=this.renderer.tablecell(this.parseInline(u.header[r].tokens),{header:!0,align:u.align[r]});for(c+=this.renderer.tablerow(o),p="",i=u.rows.length,r=0;r<i;r++){for(a=u.rows[r],o="",l=a.length,s=0;s<l;s++)o+=this.renderer.tablecell(this.parseInline(a[s].tokens),{header:!1,align:u.align[s]});p+=this.renderer.tablerow(o)}y+=this.renderer.table(c,p);continue;case"blockquote":p=this.parse(u.tokens),y+=this.renderer.blockquote(p);continue;case"list":for(g=u.ordered,d=u.start,f=u.loose,i=u.items.length,p="",r=0;r<i;r++)x=u.items[r],m=x.checked,b=x.task,k="",x.task&&(w=this.renderer.checkbox(m),f?x.tokens.length>0&&"paragraph"===x.tokens[0].type?(x.tokens[0].text=w+" 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+/*!
+ * The reveal.js markdown plugin. Handles parsing of
+ * markdown inside of presentations as well as loading
+ * of external markdown documents.
+ */
+const D="__SCRIPT_END__",P=/\[\s*((\d*):)?\s*([\s\d,|-]*)\]/,M={"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#39;"};export default()=>{let e;function t(e){let t=(e.querySelector("[data-template]")||e.querySelector("script")||e).textContent;t=t.replace(new RegExp(D,"g"),"<\/script>");const n=t.match(/^\n?(\s*)/)[1].length,r=t.match(/^\n?(\t*)/)[1].length;return r>0?t=t.replace(new RegExp("\\n?\\t{"+r+"}(.*)","g"),(function(e,t){return"\n"+t})):n>1&&(t=t.replace(new RegExp("\\n? {"+n+"}(.*)","g"),(function(e,t){return"\n"+t}))),t}function n(e){const t=e.attributes,n=[];for(let e=0,r=t.length;e<r;e++){const r=t[e].name,s=t[e].value;/data\-(markdown|separator|vertical|notes)/gi.test(r)||(s?n.push(r+'="'+s+'"'):n.push(r))}return n.join(" ")}function r(t){const n=e.getConfig().markdown;return(t=t||{}).separator=t.separator||(null==n?void 0:n.separator)||"\r?\n---\r?\n",t.verticalSeparator=t.verticalSeparator||(null==n?void 0:n.verticalSeparator)||null,t.notesSeparator=t.notesSeparator||(null==n?void 0:n.notesSeparator)||"^s*notes?:",t.attributes=t.attributes||"",t}function s(e,t){t=r(t);const n=e.split(new RegExp(t.notesSeparator,"mgi"));return 2===n.length&&(e=n[0]+'<aside class="notes">'+N(n[1].trim())+"</aside>"),'<script type="text/template">'+(e=e.replace(/<\/script>/g,D))+"<\/script>"}function i(e,t){t=r(t);const n=new RegExp(t.separator+(t.verticalSeparator?"|"+t.verticalSeparator:""),"mg"),i=new RegExp(t.separator);let l,a,o,c=0,h=!0,p=[];for(;l=n.exec(e);)a=i.test(l[0]),!a&&h&&p.push([]),o=e.substring(c,l.index),a&&h?p.push(o):p[p.length-1].push(o),c=n.lastIndex,h=a;(h?p:p[p.length-1]).push(e.substring(c));let u="";for(let e=0,n=p.length;e<n;e++)p[e]instanceof Array?(u+="<section "+t.attributes+">",p[e].forEach((function(e){u+="<section data-markdown>"+s(e,t)+"</section>"})),u+="</section>"):u+="<section "+t.attributes+" data-markdown>"+s(p[e],t)+"</section>";return u}function l(e){return new Promise((function(r){const s=[];[].slice.call(e.querySelectorAll("section[data-markdown]:not([data-markdown-parsed])")).forEach((function(e,r){e.getAttribute("data-markdown").length?s.push(function(e){return new Promise((function(t,n){const r=new XMLHttpRequest,s=e.getAttribute("data-markdown"),i=e.getAttribute("data-charset");null!==i&&""!==i&&r.overrideMimeType("text/html; charset="+i),r.onreadystatechange=function(e,r){4===r.readyState&&(r.status>=200&&r.status<300||0===r.status?t(r,s):n(r,s))}.bind(this,e,r),r.open("GET",s,!0);try{r.send()}catch(e){console.warn("Failed to get the Markdown file "+s+". Make sure that the presentation and the file are served by a HTTP server and the file can be found there. 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diff --git a/inst/reveal.js-4.6.1/plugin/markdown/markdown.js b/inst/reveal.js-4.6.1/plugin/markdown/markdown.js
new file mode 100644
index 0000000..71ea24c
--- /dev/null
+++ b/inst/reveal.js-4.6.1/plugin/markdown/markdown.js
@@ -0,0 +1,7 @@
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r}v._punctuation="!\"#$%&'()+\\-.,/:;<=>?@\\[\\]`^{|}~",v.punctuation=u(v.punctuation).replace(/punctuation/g,v._punctuation).getRegex(),v.blockSkip=/\[[^\]]*?\]\([^\)]*?\)|`[^`]*?`|<[^>]*?>/g,v.escapedEmSt=/\\\*|\\_/g,v._comment=u(R._comment).replace("(?:--\x3e|$)","--\x3e").getRegex(),v.emStrong.lDelim=u(v.emStrong.lDelim).replace(/punct/g,v._punctuation).getRegex(),v.emStrong.rDelimAst=u(v.emStrong.rDelimAst,"g").replace(/punct/g,v._punctuation).getRegex(),v.emStrong.rDelimUnd=u(v.emStrong.rDelimUnd,"g").replace(/punct/g,v._punctuation).getRegex(),v._escapes=/\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/g,v._scheme=/[a-zA-Z][a-zA-Z0-9+.-]{1,31}/,v._email=/[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+(@)[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)+(?![-_])/,v.autolink=u(v.autolink).replace("scheme",v._scheme).replace("email",v._email).getRegex(),v._attribute=/\s+[a-zA-Z:_][\w.:-]*(?:\s*=\s*"[^"]*"|\s*=\s*'[^']*'|\s*=\s*[^\s"'=<>`]+)?/,v.tag=u(v.tag).replace("comment",v._comment).replace("attribute",v._attribute).getRegex(),v._label=/(?:\[(?:\\.|[^\[\]\\])*\]|\\.|`[^`]*`|[^\[\]\\`])*?/,v._href=/<(?:\\.|[^\n<>\\])+>|[^\s\x00-\x1f]*/,v._title=/"(?:\\"?|[^"\\])*"|'(?:\\'?|[^'\\])*'|\((?:\\\)?|[^)\\])*\)/,v.link=u(v.link).replace("label",v._label).replace("href",v._href).replace("title",v._title).getRegex(),v.reflink=u(v.reflink).replace("label",v._label).replace("ref",R._label).getRegex(),v.nolink=u(v.nolink).replace("ref",R._label).getRegex(),v.reflinkSearch=u(v.reflinkSearch,"g").replace("reflink",v.reflink).replace("nolink",v.nolink).getRegex(),v.normal=y({},v),v.pedantic=y({},v.normal,{strong:{start:/^__|\*\*/,middle:/^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/,endAst:/\*\*(?!\*)/g,endUnd:/__(?!_)/g},em:{start:/^_|\*/,middle:/^()\*(?=\S)([\s\S]*?\S)\*(?!\*)|^_(?=\S)([\s\S]*?\S)_(?!_)/,endAst:/\*(?!\*)/g,endUnd:/_(?!_)/g},link:u(/^!?\[(label)\]\((.*?)\)/).replace("label",v._label).getRegex(),reflink:u(/^!?\[(label)\]\s*\[([^\]]*)\]/).replace("label",v._label).getRegex()}),v.gfm=y({},v.normal,{escape:u(v.escape).replace("])","~|])").getRegex(),_extended_email:/[A-Za-z0-9._+-]+(@)[a-zA-Z0-9-_]+(?:\.[a-zA-Z0-9-_]*[a-zA-Z0-9])+(?![-_])/,url:/^((?:ftp|https?):\/\/|www\.)(?:[a-zA-Z0-9\-]+\.?)+[^\s<]*|^email/,_backpedal:/(?:[^?!.,:;*_~()&]+|\([^)]*\)|&(?![a-zA-Z0-9]+;$)|[?!.,:;*_~)]+(?!$))+/,del:/^(~~?)(?=[^\s~])([\s\S]*?[^\s~])\1(?=[^~]|$)/,text:/^([`~]+|[^`~])(?:(?= {2,}\n)|(?=[a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-]+@)|[\s\S]*?(?:(?=[\\<!\[`*~_]|\b_|https?:\/\/|ftp:\/\/|www\.|$)|[^ ](?= {2,}\n)|[^a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-](?=[a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-]+@)))/}),v.gfm.url=u(v.gfm.url,"i").replace("email",v.gfm._extended_email).getRegex(),v.breaks=y({},v.gfm,{br:u(v.br).replace("{2,}","*").getRegex(),text:u(v.gfm.text).replace("\\b_","\\b_| {2,}\\n").replace(/\{2,\}/g,"*").getRegex()});class q{constructor(e){this.tokens=[],this.tokens.links=Object.create(null),this.options=e||t,this.options.tokenizer=this.options.tokenizer||new A,this.tokenizer=this.options.tokenizer,this.tokenizer.options=this.options,this.tokenizer.lexer=this,this.inlineQueue=[],this.state={inLink:!1,inRawBlock:!1,top:!0};const n={block:R.normal,inline:v.normal};this.options.pedantic?(n.block=R.pedantic,n.inline=v.pedantic):this.options.gfm&&(n.block=R.gfm,this.options.breaks?n.inline=v.breaks:n.inline=v.gfm),this.tokenizer.rules=n}static get rules(){return{block:R,inline:v}}static lex(e,t){return new q(t).lex(e)}static lexInline(e,t){return new q(t).inlineTokens(e)}lex(e){let t;for(e=e.replace(/\r\n|\r/g,"\n").replace(/\t/g,"    "),this.blockTokens(e,this.tokens);t=this.inlineQueue.shift();)this.inlineTokens(t.src,t.tokens);return this.tokens}blockTokens(e,t=[]){let n,r,s,i;for(this.options.pedantic&&(e=e.replace(/^ +$/gm,""));e;)if(!(this.options.extensions&&this.options.extensions.block&&this.options.extensions.block.some((r=>!!(n=r.call({lexer:this},e,t))&&(e=e.substring(n.raw.length),t.push(n),!0)))))if(n=this.tokenizer.space(e))e=e.substring(n.raw.length),1===n.raw.length&&t.length>0?t[t.length-1].raw+="\n":t.push(n);else if(n=this.tokenizer.code(e))e=e.substring(n.raw.length),r=t[t.length-1],!r||"paragraph"!==r.type&&"text"!==r.type?t.push(n):(r.raw+="\n"+n.raw,r.text+="\n"+n.text,this.inlineQueue[this.inlineQueue.length-1].src=r.text);else if(n=this.tokenizer.fences(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.heading(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.hr(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.blockquote(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.list(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.html(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.def(e))e=e.substring(n.raw.length),r=t[t.length-1],!r||"paragraph"!==r.type&&"text"!==r.type?this.tokens.links[n.tag]||(this.tokens.links[n.tag]={href:n.href,title:n.title}):(r.raw+="\n"+n.raw,r.text+="\n"+n.raw,this.inlineQueue[this.inlineQueue.length-1].src=r.text);else if(n=this.tokenizer.table(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.lheading(e))e=e.substring(n.raw.length),t.push(n);else{if(s=e,this.options.extensions&&this.options.extensions.startBlock){let t=1/0;const n=e.slice(1);let r;this.options.extensions.startBlock.forEach((function(e){r=e.call({lexer:this},n),"number"==typeof r&&r>=0&&(t=Math.min(t,r))})),t<1/0&&t>=0&&(s=e.substring(0,t+1))}if(this.state.top&&(n=this.tokenizer.paragraph(s)))r=t[t.length-1],i&&"paragraph"===r.type?(r.raw+="\n"+n.raw,r.text+="\n"+n.text,this.inlineQueue.pop(),this.inlineQueue[this.inlineQueue.length-1].src=r.text):t.push(n),i=s.length!==e.length,e=e.substring(n.raw.length);else if(n=this.tokenizer.text(e))e=e.substring(n.raw.length),r=t[t.length-1],r&&"text"===r.type?(r.raw+="\n"+n.raw,r.text+="\n"+n.text,this.inlineQueue.pop(),this.inlineQueue[this.inlineQueue.length-1].src=r.text):t.push(n);else if(e){const t="Infinite loop on byte: "+e.charCodeAt(0);if(this.options.silent){console.error(t);break}throw new Error(t)}}return this.state.top=!0,t}inline(e,t){this.inlineQueue.push({src:e,tokens:t})}inlineTokens(e,t=[]){let n,r,s,i,l,a,o=e;if(this.tokens.links){const e=Object.keys(this.tokens.links);if(e.length>0)for(;null!=(i=this.tokenizer.rules.inline.reflinkSearch.exec(o));)e.includes(i[0].slice(i[0].lastIndexOf("[")+1,-1))&&(o=o.slice(0,i.index)+"["+$("a",i[0].length-2)+"]"+o.slice(this.tokenizer.rules.inline.reflinkSearch.lastIndex))}for(;null!=(i=this.tokenizer.rules.inline.blockSkip.exec(o));)o=o.slice(0,i.index)+"["+$("a",i[0].length-2)+"]"+o.slice(this.tokenizer.rules.inline.blockSkip.lastIndex);for(;null!=(i=this.tokenizer.rules.inline.escapedEmSt.exec(o));)o=o.slice(0,i.index)+"++"+o.slice(this.tokenizer.rules.inline.escapedEmSt.lastIndex);for(;e;)if(l||(a=""),l=!1,!(this.options.extensions&&this.options.extensions.inline&&this.options.extensions.inline.some((r=>!!(n=r.call({lexer:this},e,t))&&(e=e.substring(n.raw.length),t.push(n),!0)))))if(n=this.tokenizer.escape(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.tag(e))e=e.substring(n.raw.length),r=t[t.length-1],r&&"text"===n.type&&"text"===r.type?(r.raw+=n.raw,r.text+=n.text):t.push(n);else if(n=this.tokenizer.link(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.reflink(e,this.tokens.links))e=e.substring(n.raw.length),r=t[t.length-1],r&&"text"===n.type&&"text"===r.type?(r.raw+=n.raw,r.text+=n.text):t.push(n);else if(n=this.tokenizer.emStrong(e,o,a))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.codespan(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.br(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.del(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.autolink(e,I))e=e.substring(n.raw.length),t.push(n);else if(this.state.inLink||!(n=this.tokenizer.url(e,I))){if(s=e,this.options.extensions&&this.options.extensions.startInline){let t=1/0;const n=e.slice(1);let r;this.options.extensions.startInline.forEach((function(e){r=e.call({lexer:this},n),"number"==typeof r&&r>=0&&(t=Math.min(t,r))})),t<1/0&&t>=0&&(s=e.substring(0,t+1))}if(n=this.tokenizer.inlineText(s,E))e=e.substring(n.raw.length),"_"!==n.raw.slice(-1)&&(a=n.raw.slice(-1)),l=!0,r=t[t.length-1],r&&"text"===r.type?(r.raw+=n.raw,r.text+=n.text):t.push(n);else if(e){const t="Infinite loop on byte: "+e.charCodeAt(0);if(this.options.silent){console.error(t);break}throw new Error(t)}}else e=e.substring(n.raw.length),t.push(n);return t}}class L{constructor(e){this.options=e||t}code(e,t,n){const r=(t||"").match(/\S*/)[0];if(this.options.highlight){const t=this.options.highlight(e,r);null!=t&&t!==e&&(n=!0,e=t)}return e=e.replace(/\n$/,"")+"\n",r?'<pre><code class="'+this.options.langPrefix+o(r,!0)+'">'+(n?e:o(e,!0))+"</code></pre>\n":"<pre><code>"+(n?e:o(e,!0))+"</code></pre>\n"}blockquote(e){return"<blockquote>\n"+e+"</blockquote>\n"}html(e){return e}heading(e,t,n,r){return this.options.headerIds?"<h"+t+' id="'+this.options.headerPrefix+r.slug(n)+'">'+e+"</h"+t+">\n":"<h"+t+">"+e+"</h"+t+">\n"}hr(){return this.options.xhtml?"<hr/>\n":"<hr>\n"}list(e,t,n){const r=t?"ol":"ul";return"<"+r+(t&&1!==n?' start="'+n+'"':"")+">\n"+e+"</"+r+">\n"}listitem(e){return"<li>"+e+"</li>\n"}checkbox(e){return"<input "+(e?'checked="" ':"")+'disabled="" type="checkbox"'+(this.options.xhtml?" /":"")+"> "}paragraph(e){return"<p>"+e+"</p>\n"}table(e,t){return t&&(t="<tbody>"+t+"</tbody>"),"<table>\n<thead>\n"+e+"</thead>\n"+t+"</table>\n"}tablerow(e){return"<tr>\n"+e+"</tr>\n"}tablecell(e,t){const n=t.header?"th":"td";return(t.align?"<"+n+' align="'+t.align+'">':"<"+n+">")+e+"</"+n+">\n"}strong(e){return"<strong>"+e+"</strong>"}em(e){return"<em>"+e+"</em>"}codespan(e){return"<code>"+e+"</code>"}br(){return this.options.xhtml?"<br/>":"<br>"}del(e){return"<del>"+e+"</del>"}link(e,t,n){if(null===(e=f(this.options.sanitize,this.options.baseUrl,e)))return n;let r='<a href="'+o(e)+'"';return t&&(r+=' title="'+t+'"'),r+=">"+n+"</a>",r}image(e,t,n){if(null===(e=f(this.options.sanitize,this.options.baseUrl,e)))return n;let r='<img src="'+e+'" alt="'+n+'"';return t&&(r+=' title="'+t+'"'),r+=this.options.xhtml?"/>":">",r}text(e){return e}}class C{strong(e){return e}em(e){return e}codespan(e){return e}del(e){return e}html(e){return e}text(e){return e}link(e,t,n){return""+n}image(e,t,n){return""+n}br(){return""}}class Z{constructor(){this.seen={}}serialize(e){return e.toLowerCase().trim().replace(/<[!\/a-z].*?>/gi,"").replace(/[\u2000-\u206F\u2E00-\u2E7F\\'!"#$%&()*+,./:;<=>?@[\]^`{|}~]/g,"").replace(/\s/g,"-")}getNextSafeSlug(e,t){let n=e,r=0;if(this.seen.hasOwnProperty(n)){r=this.seen[e];do{r++,n=e+"-"+r}while(this.seen.hasOwnProperty(n))}return t||(this.seen[e]=r,this.seen[n]=0),n}slug(e,t={}){const n=this.serialize(e);return this.getNextSafeSlug(n,t.dryrun)}}class O{constructor(e){this.options=e||t,this.options.renderer=this.options.renderer||new L,this.renderer=this.options.renderer,this.renderer.options=this.options,this.textRenderer=new C,this.slugger=new Z}static parse(e,t){return new O(t).parse(e)}static parseInline(e,t){return new O(t).parseInline(e)}parse(e,t=!0){let n,r,s,i,l,a,o,c,p,u,g,d,f,k,x,m,b,w,y,_="";const z=e.length;for(n=0;n<z;n++)if(u=e[n],this.options.extensions&&this.options.extensions.renderers&&this.options.extensions.renderers[u.type]&&(y=this.options.extensions.renderers[u.type].call({parser:this},u),!1!==y||!["space","hr","heading","code","table","blockquote","list","html","paragraph","text"].includes(u.type)))_+=y||"";else switch(u.type){case"space":continue;case"hr":_+=this.renderer.hr();continue;case"heading":_+=this.renderer.heading(this.parseInline(u.tokens),u.depth,h(this.parseInline(u.tokens,this.textRenderer)),this.slugger);continue;case"code":_+=this.renderer.code(u.text,u.lang,u.escaped);continue;case"table":for(c="",o="",i=u.header.length,r=0;r<i;r++)o+=this.renderer.tablecell(this.parseInline(u.header[r].tokens),{header:!0,align:u.align[r]});for(c+=this.renderer.tablerow(o),p="",i=u.rows.length,r=0;r<i;r++){for(a=u.rows[r],o="",l=a.length,s=0;s<l;s++)o+=this.renderer.tablecell(this.parseInline(a[s].tokens),{header:!1,align:u.align[s]});p+=this.renderer.tablerow(o)}_+=this.renderer.table(c,p);continue;case"blockquote":p=this.parse(u.tokens),_+=this.renderer.blockquote(p);continue;case"list":for(g=u.ordered,d=u.start,f=u.loose,i=u.items.length,p="",r=0;r<i;r++)x=u.items[r],m=x.checked,b=x.task,k="",x.task&&(w=this.renderer.checkbox(m),f?x.tokens.length>0&&"paragraph"===x.tokens[0].type?(x.tokens[0].text=w+" "+x.tokens[0].text,x.tokens[0].tokens&&x.tokens[0].tokens.length>0&&"text"===x.tokens[0].tokens[0].type&&(x.tokens[0].tokens[0].text=w+" "+x.tokens[0].tokens[0].text)):x.tokens.unshift({type:"text",text:w}):k+=w),k+=this.parse(x.tokens,f),p+=this.renderer.listitem(k,b,m);_+=this.renderer.list(p,g,d);continue;case"html":_+=this.renderer.html(u.text);continue;case"paragraph":_+=this.renderer.paragraph(this.parseInline(u.tokens));continue;case"text":for(p=u.tokens?this.parseInline(u.tokens):u.text;n+1<z&&"text"===e[n+1].type;)u=e[++n],p+="\n"+(u.tokens?this.parseInline(u.tokens):u.text);_+=t?this.renderer.paragraph(p):p;continue;default:{const e='Token with "'+u.type+'" type was not found.';if(this.options.silent)return void console.error(e);throw new Error(e)}}return _}parseInline(e,t){t=t||this.renderer;let n,r,s,i="";const l=e.length;for(n=0;n<l;n++)if(r=e[n],this.options.extensions&&this.options.extensions.renderers&&this.options.extensions.renderers[r.type]&&(s=this.options.extensions.renderers[r.type].call({parser:this},r),!1!==s||!["escape","html","link","image","strong","em","codespan","br","del","text"].includes(r.type)))i+=s||"";else switch(r.type){case"escape":case"text":i+=t.text(r.text);break;case"html":i+=t.html(r.text);break;case"link":i+=t.link(r.href,r.title,this.parseInline(r.tokens,t));break;case"image":i+=t.image(r.href,r.title,r.text);break;case"strong":i+=t.strong(this.parseInline(r.tokens,t));break;case"em":i+=t.em(this.parseInline(r.tokens,t));break;case"codespan":i+=t.codespan(r.text);break;case"br":i+=t.br();break;case"del":i+=t.del(this.parseInline(r.tokens,t));break;default:{const e='Token with "'+r.type+'" type was not found.';if(this.options.silent)return void console.error(e);throw new Error(e)}}return i}}function N(e,t,n){if(null==e)throw new Error("marked(): input parameter is undefined or null");if("string"!=typeof e)throw new Error("marked(): input parameter is of type "+Object.prototype.toString.call(e)+", string expected");if("function"==typeof t&&(n=t,t=null),S(t=y({},N.defaults,t||{})),n){const r=t.highlight;let s;try{s=q.lex(e,t)}catch(e){return n(e)}const i=function(e){let i;if(!e)try{t.walkTokens&&N.walkTokens(s,t.walkTokens),i=O.parse(s,t)}catch(t){e=t}return t.highlight=r,e?n(e):n(null,i)};if(!r||r.length<3)return i();if(delete t.highlight,!s.length)return i();let l=0;return N.walkTokens(s,(function(e){"code"===e.type&&(l++,setTimeout((()=>{r(e.text,e.lang,(function(t,n){if(t)return i(t);null!=n&&n!==e.text&&(e.text=n,e.escaped=!0),l--,0===l&&i()}))}),0))})),void(0===l&&i())}try{const n=q.lex(e,t);return t.walkTokens&&N.walkTokens(n,t.walkTokens),O.parse(n,t)}catch(e){if(e.message+="\nPlease report this to https://github.com/markedjs/marked.",t.silent)return"<p>An error occurred:</p><pre>"+o(e.message+"",!0)+"</pre>";throw e}}N.options=N.setOptions=function(e){var n;return y(N.defaults,e),n=N.defaults,t=n,N},N.getDefaults=e,N.defaults=t,N.use=function(...e){const t=y({},...e),n=N.defaults.extensions||{renderers:{},childTokens:{}};let r;e.forEach((e=>{if(e.extensions&&(r=!0,e.extensions.forEach((e=>{if(!e.name)throw new Error("extension name required");if(e.renderer){const t=n.renderers?n.renderers[e.name]:null;n.renderers[e.name]=t?function(...n){let r=e.renderer.apply(this,n);return!1===r&&(r=t.apply(this,n)),r}:e.renderer}if(e.tokenizer){if(!e.level||"block"!==e.level&&"inline"!==e.level)throw new Error("extension level must be 'block' or 'inline'");n[e.level]?n[e.level].unshift(e.tokenizer):n[e.level]=[e.tokenizer],e.start&&("block"===e.level?n.startBlock?n.startBlock.push(e.start):n.startBlock=[e.start]:"inline"===e.level&&(n.startInline?n.startInline.push(e.start):n.startInline=[e.start]))}e.childTokens&&(n.childTokens[e.name]=e.childTokens)}))),e.renderer){const n=N.defaults.renderer||new L;for(const t in e.renderer){const r=n[t];n[t]=(...s)=>{let i=e.renderer[t].apply(n,s);return!1===i&&(i=r.apply(n,s)),i}}t.renderer=n}if(e.tokenizer){const n=N.defaults.tokenizer||new A;for(const t in e.tokenizer){const r=n[t];n[t]=(...s)=>{let i=e.tokenizer[t].apply(n,s);return!1===i&&(i=r.apply(n,s)),i}}t.tokenizer=n}if(e.walkTokens){const n=N.defaults.walkTokens;t.walkTokens=function(t){e.walkTokens.call(this,t),n&&n.call(this,t)}}r&&(t.extensions=n),N.setOptions(t)}))},N.walkTokens=function(e,t){for(const n of e)switch(t.call(N,n),n.type){case"table":for(const e of n.header)N.walkTokens(e.tokens,t);for(const e of n.rows)for(const n of e)N.walkTokens(n.tokens,t);break;case"list":N.walkTokens(n.items,t);break;default:N.defaults.extensions&&N.defaults.extensions.childTokens&&N.defaults.extensions.childTokens[n.type]?N.defaults.extensions.childTokens[n.type].forEach((function(e){N.walkTokens(n[e],t)})):n.tokens&&N.walkTokens(n.tokens,t)}},N.parseInline=function(e,t){if(null==e)throw new Error("marked.parseInline(): input parameter is undefined or null");if("string"!=typeof e)throw new Error("marked.parseInline(): input parameter is of type "+Object.prototype.toString.call(e)+", string expected");S(t=y({},N.defaults,t||{}));try{const n=q.lexInline(e,t);return t.walkTokens&&N.walkTokens(n,t.walkTokens),O.parseInline(n,t)}catch(e){if(e.message+="\nPlease report this to https://github.com/markedjs/marked.",t.silent)return"<p>An error occurred:</p><pre>"+o(e.message+"",!0)+"</pre>";throw e}},N.Parser=O,N.parser=O.parse,N.Renderer=L,N.TextRenderer=C,N.Lexer=q,N.lexer=q.lex,N.Tokenizer=A,N.Slugger=Z,N.parse=N;
+/*!
+   * The reveal.js markdown plugin. Handles parsing of
+   * markdown inside of presentations as well as loading
+   * of external markdown documents.
+   */
+const D="__SCRIPT_END__",M=/\[\s*((\d*):)?\s*([\s\d,|-]*)\]/,P={"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#39;"};return()=>{let e;function t(e){let t=(e.querySelector("[data-template]")||e.querySelector("script")||e).textContent;t=t.replace(new RegExp(D,"g"),"<\/script>");const n=t.match(/^\n?(\s*)/)[1].length,r=t.match(/^\n?(\t*)/)[1].length;return r>0?t=t.replace(new RegExp("\\n?\\t{"+r+"}(.*)","g"),(function(e,t){return"\n"+t})):n>1&&(t=t.replace(new RegExp("\\n? {"+n+"}(.*)","g"),(function(e,t){return"\n"+t}))),t}function n(e){const t=e.attributes,n=[];for(let e=0,r=t.length;e<r;e++){const r=t[e].name,s=t[e].value;/data\-(markdown|separator|vertical|notes)/gi.test(r)||(s?n.push(r+'="'+s+'"'):n.push(r))}return n.join(" ")}function r(t){const n=e.getConfig().markdown;return(t=t||{}).separator=t.separator||(null==n?void 0:n.separator)||"\r?\n---\r?\n",t.verticalSeparator=t.verticalSeparator||(null==n?void 0:n.verticalSeparator)||null,t.notesSeparator=t.notesSeparator||(null==n?void 0:n.notesSeparator)||"^s*notes?:",t.attributes=t.attributes||"",t}function s(e,t){t=r(t);const n=e.split(new RegExp(t.notesSeparator,"mgi"));return 2===n.length&&(e=n[0]+'<aside class="notes">'+N(n[1].trim())+"</aside>"),'<script type="text/template">'+(e=e.replace(/<\/script>/g,D))+"<\/script>"}function i(e,t){t=r(t);const n=new RegExp(t.separator+(t.verticalSeparator?"|"+t.verticalSeparator:""),"mg"),i=new RegExp(t.separator);let l,a,o,c=0,h=!0,p=[];for(;l=n.exec(e);)a=i.test(l[0]),!a&&h&&p.push([]),o=e.substring(c,l.index),a&&h?p.push(o):p[p.length-1].push(o),c=n.lastIndex,h=a;(h?p:p[p.length-1]).push(e.substring(c));let u="";for(let e=0,n=p.length;e<n;e++)p[e]instanceof Array?(u+="<section "+t.attributes+">",p[e].forEach((function(e){u+="<section data-markdown>"+s(e,t)+"</section>"})),u+="</section>"):u+="<section "+t.attributes+" data-markdown>"+s(p[e],t)+"</section>";return u}function l(e){return new Promise((function(r){const s=[];[].slice.call(e.querySelectorAll("section[data-markdown]:not([data-markdown-parsed])")).forEach((function(e,r){e.getAttribute("data-markdown").length?s.push(function(e){return new Promise((function(t,n){const r=new XMLHttpRequest,s=e.getAttribute("data-markdown"),i=e.getAttribute("data-charset");null!==i&&""!==i&&r.overrideMimeType("text/html; charset="+i),r.onreadystatechange=function(e,r){4===r.readyState&&(r.status>=200&&r.status<300||0===r.status?t(r,s):n(r,s))}.bind(this,e,r),r.open("GET",s,!0);try{r.send()}catch(e){console.warn("Failed to get the Markdown file "+s+". Make sure that the presentation and the file are served by a HTTP server and the file can be found there. "+e),t(r,s)}}))}(e).then((function(t,r){e.outerHTML=i(t.responseText,{separator:e.getAttribute("data-separator"),verticalSeparator:e.getAttribute("data-separator-vertical"),notesSeparator:e.getAttribute("data-separator-notes"),attributes:n(e)})}),(function(t,n){e.outerHTML='<section data-state="alert">ERROR: The attempt to fetch '+n+" failed with HTTP status "+t.status+".Check your browser's JavaScript console for more details.<p>Remember that you need to serve the presentation HTML from a HTTP server.</p></section>"}))):e.outerHTML=i(t(e),{separator:e.getAttribute("data-separator"),verticalSeparator:e.getAttribute("data-separator-vertical"),notesSeparator:e.getAttribute("data-separator-notes"),attributes:n(e)})})),Promise.all(s).then(r)}))}function a(e,t,n){const r=new RegExp(n,"mg"),s=new RegExp('([^"= ]+?)="([^"]+?)"|(data-[^"= ]+?)(?=[" ])',"mg");let i,l,a=e.nodeValue;if(i=r.exec(a)){const n=i[1];for(a=a.substring(0,i.index)+a.substring(r.lastIndex),e.nodeValue=a;l=s.exec(n);)l[2]?t.setAttribute(l[1],l[2]):t.setAttribute(l[3],"");return!0}return!1}function o(e,t,n,r,s){if(null!==t&&void 0!==t.childNodes&&t.childNodes.length>0){let n=t;for(let i=0;i<t.childNodes.length;i++){const l=t.childNodes[i];if(i>0){let e=i-1;for(;e>=0;){const r=t.childNodes[e];if("function"==typeof r.setAttribute&&"BR"!==r.tagName){n=r;break}e-=1}}let a=e;"section"===l.nodeName&&(a=l,n=l),"function"!=typeof l.setAttribute&&l.nodeType!==Node.COMMENT_NODE||o(a,l,n,r,s)}}t.nodeType===Node.COMMENT_NODE&&!1===a(t,n,r)&&a(t,e,s)}function c(){const n=e.getRevealElement().querySelectorAll("[data-markdown]:not([data-markdown-parsed])");return[].slice.call(n).forEach((function(e){e.setAttribute("data-markdown-parsed",!0);const n=e.querySelector("aside.notes"),r=t(e);e.innerHTML=N(r),o(e,e,null,e.getAttribute("data-element-attributes")||e.parentNode.getAttribute("data-element-attributes")||"\\.element\\s*?(.+?)$",e.getAttribute("data-attributes")||e.parentNode.getAttribute("data-attributes")||"\\.slide:\\s*?(\\S.+?)$"),n&&e.appendChild(n)})),Promise.resolve()}return{id:"markdown",init:function(t){e=t;let{renderer:n,animateLists:r,...s}=e.getConfig().markdown||{};return n||(n=new N.Renderer,n.code=(e,t)=>{let n="",r="";if(M.test(t)){let e=t.match(M)[2];e&&(n=`data-ln-start-from="${e.trim()}"`),r=t.match(M)[3].trim(),r=`data-line-numbers="${r}"`,t=t.replace(M,"").trim()}return`<pre><code ${r} ${n} class="${t}">${e=e.replace(/([&<>'"])/g,(e=>P[e]))}</code></pre>`}),!0===r&&(n.listitem=e=>`<li class="fragment">${e}</li>`),N.setOptions({renderer:n,...s}),l(e.getRevealElement()).then(c)},processSlides:l,convertSlides:c,slidify:i,marked:N}}}));
diff --git a/inst/reveal.js-4.6.1/plugin/markdown/plugin.js b/inst/reveal.js-4.6.1/plugin/markdown/plugin.js
new file mode 100644
index 0000000..bb63de8
--- /dev/null
+++ b/inst/reveal.js-4.6.1/plugin/markdown/plugin.js
@@ -0,0 +1,491 @@
+/*!
+ * The reveal.js markdown plugin. Handles parsing of
+ * markdown inside of presentations as well as loading
+ * of external markdown documents.
+ */
+
+import { marked } from 'marked';
+
+const DEFAULT_SLIDE_SEPARATOR = '\r?\n---\r?\n',
+	  DEFAULT_VERTICAL_SEPARATOR = null,
+	  DEFAULT_NOTES_SEPARATOR = '^\s*notes?:',
+	  DEFAULT_ELEMENT_ATTRIBUTES_SEPARATOR = '\\\.element\\\s*?(.+?)$',
+	  DEFAULT_SLIDE_ATTRIBUTES_SEPARATOR = '\\\.slide:\\\s*?(\\\S.+?)$';
+
+const SCRIPT_END_PLACEHOLDER = '__SCRIPT_END__';
+
+// match an optional line number offset and highlight line numbers
+// [<line numbers>] or [<offset>: <line numbers>]
+const CODE_LINE_NUMBER_REGEX = /\[\s*((\d*):)?\s*([\s\d,|-]*)\]/;
+
+const HTML_ESCAPE_MAP = {
+  '&': '&amp;',
+  '<': '&lt;',
+  '>': '&gt;',
+  '"': '&quot;',
+  "'": '&#39;'
+};
+
+const Plugin = () => {
+
+	// The reveal.js instance this plugin is attached to
+	let deck;
+
+	/**
+	 * Retrieves the markdown contents of a slide section
+	 * element. Normalizes leading tabs/whitespace.
+	 */
+	function getMarkdownFromSlide( section ) {
+
+		// look for a <script> or <textarea data-template> wrapper
+		const template = section.querySelector( '[data-template]' ) || section.querySelector( 'script' );
+
+		// strip leading whitespace so it isn't evaluated as code
+		let text = ( template || section ).textContent;
+
+		// restore script end tags
+		text = text.replace( new RegExp( SCRIPT_END_PLACEHOLDER, 'g' ), '</script>' );
+
+		const leadingWs = text.match( /^\n?(\s*)/ )[1].length,
+			leadingTabs = text.match( /^\n?(\t*)/ )[1].length;
+
+		if( leadingTabs > 0 ) {
+			text = text.replace( new RegExp('\\n?\\t{' + leadingTabs + '}(.*)','g'), function(m, p1) { return '\n' + p1 ; } );
+		}
+		else if( leadingWs > 1 ) {
+			text = text.replace( new RegExp('\\n? {' + leadingWs + '}(.*)', 'g'), function(m, p1) { return '\n' + p1 ; } );
+		}
+
+		return text;
+
+	}
+
+	/**
+	 * Given a markdown slide section element, this will
+	 * return all arguments that aren't related to markdown
+	 * parsing. Used to forward any other user-defined arguments
+	 * to the output markdown slide.
+	 */
+	function getForwardedAttributes( section ) {
+
+		const attributes = section.attributes;
+		const result = [];
+
+		for( let i = 0, len = attributes.length; i < len; i++ ) {
+			const name = attributes[i].name,
+				value = attributes[i].value;
+
+			// disregard attributes that are used for markdown loading/parsing
+			if( /data\-(markdown|separator|vertical|notes)/gi.test( name ) ) continue;
+
+			if( value ) {
+				result.push( name + '="' + value + '"' );
+			}
+			else {
+				result.push( name );
+			}
+		}
+
+		return result.join( ' ' );
+
+	}
+
+	/**
+	 * Inspects the given options and fills out default
+	 * values for what's not defined.
+	 */
+	function getSlidifyOptions( options ) {
+		const markdownConfig = deck.getConfig().markdown;
+
+		options = options || {};
+		options.separator = options.separator || markdownConfig?.separator || DEFAULT_SLIDE_SEPARATOR;
+		options.verticalSeparator = options.verticalSeparator || markdownConfig?.verticalSeparator || DEFAULT_VERTICAL_SEPARATOR;
+		options.notesSeparator = options.notesSeparator || markdownConfig?.notesSeparator || DEFAULT_NOTES_SEPARATOR;
+		options.attributes = options.attributes || '';
+
+		return options;
+
+	}
+
+	/**
+	 * Helper function for constructing a markdown slide.
+	 */
+	function createMarkdownSlide( content, options ) {
+
+		options = getSlidifyOptions( options );
+
+		const notesMatch = content.split( new RegExp( options.notesSeparator, 'mgi' ) );
+
+		if( notesMatch.length === 2 ) {
+			content = notesMatch[0] + '<aside class="notes">' + marked(notesMatch[1].trim()) + '</aside>';
+		}
+
+		// prevent script end tags in the content from interfering
+		// with parsing
+		content = content.replace( /<\/script>/g, SCRIPT_END_PLACEHOLDER );
+
+		return '<script type="text/template">' + content + '</script>';
+
+	}
+
+	/**
+	 * Parses a data string into multiple slides based
+	 * on the passed in separator arguments.
+	 */
+	function slidify( markdown, options ) {
+
+		options = getSlidifyOptions( options );
+
+		const separatorRegex = new RegExp( options.separator + ( options.verticalSeparator ? '|' + options.verticalSeparator : '' ), 'mg' ),
+			horizontalSeparatorRegex = new RegExp( options.separator );
+
+		let matches,
+			lastIndex = 0,
+			isHorizontal,
+			wasHorizontal = true,
+			content,
+			sectionStack = [];
+
+		// iterate until all blocks between separators are stacked up
+		while( matches = separatorRegex.exec( markdown ) ) {
+			const notes = null;
+
+			// determine direction (horizontal by default)
+			isHorizontal = horizontalSeparatorRegex.test( matches[0] );
+
+			if( !isHorizontal && wasHorizontal ) {
+				// create vertical stack
+				sectionStack.push( [] );
+			}
+
+			// pluck slide content from markdown input
+			content = markdown.substring( lastIndex, matches.index );
+
+			if( isHorizontal && wasHorizontal ) {
+				// add to horizontal stack
+				sectionStack.push( content );
+			}
+			else {
+				// add to vertical stack
+				sectionStack[sectionStack.length-1].push( content );
+			}
+
+			lastIndex = separatorRegex.lastIndex;
+			wasHorizontal = isHorizontal;
+		}
+
+		// add the remaining slide
+		( wasHorizontal ? sectionStack : sectionStack[sectionStack.length-1] ).push( markdown.substring( lastIndex ) );
+
+		let markdownSections = '';
+
+		// flatten the hierarchical stack, and insert <section data-markdown> tags
+		for( let i = 0, len = sectionStack.length; i < len; i++ ) {
+			// vertical
+			if( sectionStack[i] instanceof Array ) {
+				markdownSections += '<section '+ options.attributes +'>';
+
+				sectionStack[i].forEach( function( child ) {
+					markdownSections += '<section data-markdown>' + createMarkdownSlide( child, options ) + '</section>';
+				} );
+
+				markdownSections += '</section>';
+			}
+			else {
+				markdownSections += '<section '+ options.attributes +' data-markdown>' + createMarkdownSlide( sectionStack[i], options ) + '</section>';
+			}
+		}
+
+		return markdownSections;
+
+	}
+
+	/**
+	 * Parses any current data-markdown slides, splits
+	 * multi-slide markdown into separate sections and
+	 * handles loading of external markdown.
+	 */
+	function processSlides( scope ) {
+
+		return new Promise( function( resolve ) {
+
+			const externalPromises = [];
+
+			[].slice.call( scope.querySelectorAll( 'section[data-markdown]:not([data-markdown-parsed])') ).forEach( function( section, i ) {
+
+				if( section.getAttribute( 'data-markdown' ).length ) {
+
+					externalPromises.push( loadExternalMarkdown( section ).then(
+
+						// Finished loading external file
+						function( xhr, url ) {
+							section.outerHTML = slidify( xhr.responseText, {
+								separator: section.getAttribute( 'data-separator' ),
+								verticalSeparator: section.getAttribute( 'data-separator-vertical' ),
+								notesSeparator: section.getAttribute( 'data-separator-notes' ),
+								attributes: getForwardedAttributes( section )
+							});
+						},
+
+						// Failed to load markdown
+						function( xhr, url ) {
+							section.outerHTML = '<section data-state="alert">' +
+								'ERROR: The attempt to fetch ' + url + ' failed with HTTP status ' + xhr.status + '.' +
+								'Check your browser\'s JavaScript console for more details.' +
+								'<p>Remember that you need to serve the presentation HTML from a HTTP server.</p>' +
+								'</section>';
+						}
+
+					) );
+
+				}
+				else {
+
+					section.outerHTML = slidify( getMarkdownFromSlide( section ), {
+						separator: section.getAttribute( 'data-separator' ),
+						verticalSeparator: section.getAttribute( 'data-separator-vertical' ),
+						notesSeparator: section.getAttribute( 'data-separator-notes' ),
+						attributes: getForwardedAttributes( section )
+					});
+
+				}
+
+			});
+
+			Promise.all( externalPromises ).then( resolve );
+
+		} );
+
+	}
+
+	function loadExternalMarkdown( section ) {
+
+		return new Promise( function( resolve, reject ) {
+
+			const xhr = new XMLHttpRequest(),
+				url = section.getAttribute( 'data-markdown' );
+
+			const datacharset = section.getAttribute( 'data-charset' );
+
+			// see https://developer.mozilla.org/en-US/docs/Web/API/element.getAttribute#Notes
+			if( datacharset !== null && datacharset !== '' ) {
+				xhr.overrideMimeType( 'text/html; charset=' + datacharset );
+			}
+
+			xhr.onreadystatechange = function( section, xhr ) {
+				if( xhr.readyState === 4 ) {
+					// file protocol yields status code 0 (useful for local debug, mobile applications etc.)
+					if ( ( xhr.status >= 200 && xhr.status < 300 ) || xhr.status === 0 ) {
+
+						resolve( xhr, url );
+
+					}
+					else {
+
+						reject( xhr, url );
+
+					}
+				}
+			}.bind( this, section, xhr );
+
+			xhr.open( 'GET', url, true );
+
+			try {
+				xhr.send();
+			}
+			catch ( e ) {
+				console.warn( 'Failed to get the Markdown file ' + url + '. Make sure that the presentation and the file are served by a HTTP server and the file can be found there. ' + e );
+				resolve( xhr, url );
+			}
+
+		} );
+
+	}
+
+	/**
+	 * Check if a node value has the attributes pattern.
+	 * If yes, extract it and add that value as one or several attributes
+	 * to the target element.
+	 *
+	 * You need Cache Killer on Chrome to see the effect on any FOM transformation
+	 * directly on refresh (F5)
+	 * http://stackoverflow.com/questions/5690269/disabling-chrome-cache-for-website-development/7000899#answer-11786277
+	 */
+	function addAttributeInElement( node, elementTarget, separator ) {
+
+		const markdownClassesInElementsRegex = new RegExp( separator, 'mg' );
+		const markdownClassRegex = new RegExp( "([^\"= ]+?)=\"([^\"]+?)\"|(data-[^\"= ]+?)(?=[\" ])", 'mg' );
+		let nodeValue = node.nodeValue;
+		let matches,
+			matchesClass;
+		if( matches = markdownClassesInElementsRegex.exec( nodeValue ) ) {
+
+			const classes = matches[1];
+			nodeValue = nodeValue.substring( 0, matches.index ) + nodeValue.substring( markdownClassesInElementsRegex.lastIndex );
+			node.nodeValue = nodeValue;
+			while( matchesClass = markdownClassRegex.exec( classes ) ) {
+				if( matchesClass[2] ) {
+					elementTarget.setAttribute( matchesClass[1], matchesClass[2] );
+				} else {
+					elementTarget.setAttribute( matchesClass[3], "" );
+				}
+			}
+			return true;
+		}
+		return false;
+	}
+
+	/**
+	 * Add attributes to the parent element of a text node,
+	 * or the element of an attribute node.
+	 */
+	function addAttributes( section, element, previousElement, separatorElementAttributes, separatorSectionAttributes ) {
+
+		if ( element !== null && element.childNodes !== undefined && element.childNodes.length > 0 ) {
+			let previousParentElement = element;
+			for( let i = 0; i < element.childNodes.length; i++ ) {
+				const childElement = element.childNodes[i];
+				if ( i > 0 ) {
+					let j = i - 1;
+					while ( j >= 0 ) {
+						const aPreviousChildElement = element.childNodes[j];
+						if ( typeof aPreviousChildElement.setAttribute === 'function' && aPreviousChildElement.tagName !== "BR" ) {
+							previousParentElement = aPreviousChildElement;
+							break;
+						}
+						j = j - 1;
+					}
+				}
+				let parentSection = section;
+				if( childElement.nodeName ===  "section" ) {
+					parentSection = childElement ;
+					previousParentElement = childElement ;
+				}
+				if ( typeof childElement.setAttribute === 'function' || childElement.nodeType === Node.COMMENT_NODE ) {
+					addAttributes( parentSection, childElement, previousParentElement, separatorElementAttributes, separatorSectionAttributes );
+				}
+			}
+		}
+
+		if ( element.nodeType === Node.COMMENT_NODE ) {
+			if ( addAttributeInElement( element, previousElement, separatorElementAttributes ) === false ) {
+				addAttributeInElement( element, section, separatorSectionAttributes );
+			}
+		}
+	}
+
+	/**
+	 * Converts any current data-markdown slides in the
+	 * DOM to HTML.
+	 */
+	function convertSlides() {
+
+		const sections = deck.getRevealElement().querySelectorAll( '[data-markdown]:not([data-markdown-parsed])');
+
+		[].slice.call( sections ).forEach( function( section ) {
+
+			section.setAttribute( 'data-markdown-parsed', true )
+
+			const notes = section.querySelector( 'aside.notes' );
+			const markdown = getMarkdownFromSlide( section );
+
+			section.innerHTML = marked( markdown );
+			addAttributes( 	section, section, null, section.getAttribute( 'data-element-attributes' ) ||
+							section.parentNode.getAttribute( 'data-element-attributes' ) ||
+							DEFAULT_ELEMENT_ATTRIBUTES_SEPARATOR,
+							section.getAttribute( 'data-attributes' ) ||
+							section.parentNode.getAttribute( 'data-attributes' ) ||
+							DEFAULT_SLIDE_ATTRIBUTES_SEPARATOR);
+
+			// If there were notes, we need to re-add them after
+			// having overwritten the section's HTML
+			if( notes ) {
+				section.appendChild( notes );
+			}
+
+		} );
+
+		return Promise.resolve();
+
+	}
+
+	function escapeForHTML( input ) {
+
+	  return input.replace( /([&<>'"])/g, char => HTML_ESCAPE_MAP[char] );
+
+	}
+
+	return {
+		id: 'markdown',
+
+		/**
+		 * Starts processing and converting Markdown within the
+		 * current reveal.js deck.
+		 */
+		init: function( reveal ) {
+
+			deck = reveal;
+
+			let { renderer, animateLists, ...markedOptions } = deck.getConfig().markdown || {};
+
+			if( !renderer ) {
+				renderer = new marked.Renderer();
+
+				renderer.code = ( code, language ) => {
+
+					// Off by default
+					let lineNumberOffset = '';
+					let lineNumbers = '';
+
+					// Users can opt in to show line numbers and highlight
+					// specific lines.
+					// ```javascript []        show line numbers
+					// ```javascript [1,4-8]   highlights lines 1 and 4-8
+					// optional line number offset:
+					// ```javascript [25: 1,4-8]   start line numbering at 25,
+					//                             highlights lines 1 (numbered as 25) and 4-8 (numbered as 28-32)
+					if( CODE_LINE_NUMBER_REGEX.test( language ) ) {
+						let lineNumberOffsetMatch =  language.match( CODE_LINE_NUMBER_REGEX )[2];
+						if (lineNumberOffsetMatch){
+							lineNumberOffset =  `data-ln-start-from="${lineNumberOffsetMatch.trim()}"`;
+						}
+
+						lineNumbers = language.match( CODE_LINE_NUMBER_REGEX )[3].trim();
+						lineNumbers = `data-line-numbers="${lineNumbers}"`;
+						language = language.replace( CODE_LINE_NUMBER_REGEX, '' ).trim();
+					}
+
+					// Escape before this gets injected into the DOM to
+					// avoid having the HTML parser alter our code before
+					// highlight.js is able to read it
+					code = escapeForHTML( code );
+
+					// return `<pre><code ${lineNumbers} class="${language}">${code}</code></pre>`;
+
+					return `<pre><code ${lineNumbers} ${lineNumberOffset} class="${language}">${code}</code></pre>`;
+				};
+			}
+
+			if( animateLists === true ) {
+				renderer.listitem = text => `<li class="fragment">${text}</li>`;
+			}
+
+			marked.setOptions( {
+				renderer,
+				...markedOptions
+			} );
+
+			return processSlides( deck.getRevealElement() ).then( convertSlides );
+
+		},
+
+		// TODO: Do these belong in the API?
+		processSlides: processSlides,
+		convertSlides: convertSlides,
+		slidify: slidify,
+		marked: marked
+	}
+
+};
+
+export default Plugin;