diff --git a/inst/reveal.js-4.1.2/dist/reveal.esm.js b/inst/reveal.js-4.1.2/dist/reveal.esm.js
new file mode 100644
index 0000000..4a7d49b
--- /dev/null
+++ b/inst/reveal.js-4.1.2/dist/reveal.esm.js
@@ -0,0 +1,9 @@
+/*!
+* reveal.js 4.1.1
+* https://revealjs.com
+* MIT licensed
+*
+* Copyright (C) 2020 Hakim El Hattab, https://hakim.se
+*/
+const e=/registerPlugin|registerKeyboardShortcut|addKeyBinding|addEventListener/,t=/fade-(down|up|right|left|out|in-then-out|in-then-semi-out)|semi-fade-out|current-visible|shrink|grow/,i=(e,t)=>{for(let i in t)e[i]=t[i];return e},a=(e,t)=>Array.from(e.querySelectorAll(t)),n=(e,t,i)=>{i?e.classList.add(t):e.classList.remove(t)},s=e=>{if("string"==typeof e){if("null"===e)return null;if("true"===e)return!0;if("false"===e)return!1;if(e.match(/^-?[\d\.]+$/))return parseFloat(e)}return e},o=(e,t)=>{e.style.transform=t},r=(e,t)=>{let i=e.matches||e.matchesSelector||e.msMatchesSelector;return!(!i||!i.call(e,t))},l=(e,t)=>{if("function"==typeof e.closest)return e.closest(t);for(;e;){if(r(e,t))return e;e=e.parentNode}return null},d=(e,t,i,a="")=>{let n=e.querySelectorAll("."+i);for(let t=0;t<n.length;t++){let i=n[t];if(i.parentNode===e)return i}let s=document.createElement(t);return s.className=i,s.innerHTML=a,e.appendChild(s),s},c=e=>{let t=document.createElement("style");return 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