diff --git a/inst/reveal.js-4.2.1/test/assets/external-script-a.js b/inst/reveal.js-4.2.1/test/assets/external-script-a.js
new file mode 100644
index 0000000..cbc8da1
--- /dev/null
+++ b/inst/reveal.js-4.2.1/test/assets/external-script-a.js
@@ -0,0 +1 @@
+window.externalScriptSequence += 'A';
\ No newline at end of file
diff --git a/inst/reveal.js-4.2.1/test/assets/external-script-b.js b/inst/reveal.js-4.2.1/test/assets/external-script-b.js
new file mode 100644
index 0000000..e5bca5a
--- /dev/null
+++ b/inst/reveal.js-4.2.1/test/assets/external-script-b.js
@@ -0,0 +1 @@
+window.externalScriptSequence += 'B';
\ No newline at end of file
diff --git a/inst/reveal.js-4.2.1/test/assets/external-script-c.js b/inst/reveal.js-4.2.1/test/assets/external-script-c.js
new file mode 100644
index 0000000..7d4ccf6
--- /dev/null
+++ b/inst/reveal.js-4.2.1/test/assets/external-script-c.js
@@ -0,0 +1 @@
+window.externalScriptSequence += 'C';
\ No newline at end of file
diff --git a/inst/reveal.js-4.2.1/test/assets/external-script-d.js b/inst/reveal.js-4.2.1/test/assets/external-script-d.js
new file mode 100644
index 0000000..1c5925b
--- /dev/null
+++ b/inst/reveal.js-4.2.1/test/assets/external-script-d.js
@@ -0,0 +1 @@
+window.externalScriptSequence += 'D';
\ No newline at end of file
diff --git a/inst/reveal.js-4.2.1/test/simple.md b/inst/reveal.js-4.2.1/test/simple.md
new file mode 100644
index 0000000..97bae7e
--- /dev/null
+++ b/inst/reveal.js-4.2.1/test/simple.md
@@ -0,0 +1,12 @@
+## Slide 1.1
+
+```js
+var a = 1;
+```
+
+
+## Slide 1.2
+
+
+
+## Slide 2
\ No newline at end of file
diff --git a/inst/reveal.js-4.2.1/test/test-auto-animate.html b/inst/reveal.js-4.2.1/test/test-auto-animate.html
new file mode 100644
index 0000000..4c8463e
--- /dev/null
+++ b/inst/reveal.js-4.2.1/test/test-auto-animate.html
@@ -0,0 +1,166 @@
+<!doctype html>
+<html lang="en">
+
+	<head>
+		<meta charset="utf-8">
+
+		<title>reveal.js - Test Auto-Animate</title>
+
+		<link rel="stylesheet" href="../dist/reveal.css">
+		<link rel="stylesheet" href="../node_modules/qunit/qunit/qunit.css">
+		<script src="../node_modules/qunit/qunit/qunit.js"></script>
+	</head>
+
+	<body style="overflow: auto;">
+
+		<div id="qunit"></div>
+		<div id="qunit-fixture"></div>
+
+		<div class="reveal">
+
+			<div class="slides">
+
+				<section data-auto-animate>
+					<h1>h1</h1>
+					<h2>h2</h2>
+					<h3 style="position: absolute; left: 0;">h3</h3>
+				</section>
+
+				<section data-auto-animate>
+					<h1 data-auto-animate-duration="0.1">h1</h1>
+					<h2 style="opacity: 0;">h2</h2>
+					<h3 style="position: absolute; left: 100px;">h3</h3>
+				</section>
+
+				<section data-auto-animate data-auto-animate-duration="0.1">
+					<h1>h1</h1>
+					<h2>h2</h2>
+					<h3>h3</h3>
+				</section>
+
+				<section>
+					<h1>Non-auto-animate slide</h1>
+				</section>
+
+				<section data-auto-animate>
+					<h1 class="fragment">h1</h1>
+					<h2 class="fragment">h2</h2>
+					<h3>h3</h3>
+				</section>
+
+				<section data-auto-animate>
+					<h1 class="fragment">h1</h1>
+					<h2 class="fragment">h2</h2>
+					<h3 class="fragment">h3</h3>
+				</section>
+
+				<section>
+					<h1>Non-auto-animate slide</h1>
+				</section>
+
+			</div>
+
+		</div>
+
+		<script src="../dist/reveal.js"></script>
+		<script>
+
+			QUnit.config.reorder = false;
+
+			const slides = Array.prototype.map.call( document.querySelectorAll( '.slides section' ), slide => {
+				return {
+					slide: slide,
+					h1: slide.querySelector( 'h1' ),
+					h2: slide.querySelector( 'h2' ),
+					h3: slide.querySelector( 'h3' )
+				};
+			} );
+
+			Reveal.initialize().then( async () => {
+
+				QUnit.module( 'Auto-Animate' );
+
+				QUnit.test( 'Adds data-auto-animate-target', assert => {
+					Reveal.slide(1);
+					assert.strictEqual( slides[0].h1.getAttribute( 'data-auto-animate-target' ), '', 'From elements have blank data-auto-animate-target' );
+					assert.ok( slides[1].h1.getAttribute( 'data-auto-animate-target' ).length > 0, 'To elements have a data-auto-animate-target value' );
+				});
+
+				QUnit.test( 'Ends on correct target styles', assert => {
+					Reveal.slide(1);
+					assert.strictEqual( slides[1].h2.style.opacity, "0" );
+					assert.strictEqual( slides[1].h3.offsetLeft, 100 );
+				});
+
+				QUnit.test( 'Does not add [data-auto-animate] on non auto-animated slides', assert => {
+					Reveal.slide(2);
+					Reveal.next();
+					assert.ok( slides[3].slide.hasAttribute( 'data-auto-animate' ) === false )
+				});
+
+				QUnit.test( 'autoAnimate config option', assert => {
+					Reveal.configure({ autoAnimate: false });
+
+					assert.ok( document.querySelectorAll( 'data-auto-animate-target' ).length === 0, 'Removes all [data-auto-animate-target]' )
+					assert.ok( Array.prototype.every.call( document.querySelectorAll( 'section[data-auto-animate]' ), el => {
+						return el.dataset.autoAnimate === '';
+					}, 'All data-auto-animate attributes are reset' ) );
+
+					Reveal.configure({ autoAnimate: true });
+				});
+
+				QUnit.test( 'Carries forward matching fragment visibility', assert => {
+					Reveal.slide(4);
+					assert.ok( !slides[5].h1.classList.contains( 'visible' ) )
+					Reveal.next();
+					Reveal.next();
+					Reveal.next();
+					assert.ok( slides[5].h1.classList.contains( 'visible' ) )
+					assert.ok( slides[5].h2.classList.contains( 'visible' ) )
+					assert.ok( !slides[5].h3.classList.contains( 'visible' ) )
+					Reveal.next();
+					assert.ok( slides[5].h3.classList.contains( 'visible' ) )
+					Reveal.next();
+					assert.ok( slides[6].slide === Reveal.getCurrentSlide() )
+				});
+
+				QUnit.test( 'Slide specific data-auto-animate-duration', assert => {
+					assert.timeout( 400 );
+					assert.expect( 1 );
+
+					return new Promise( resolve => {
+						let callback = () => {
+							slides[2].h3.removeEventListener( 'transitionend', callback );
+							assert.ok( true, 'Transition ended within time window' );
+							resolve();
+						}
+
+						Reveal.slide(1);
+						Reveal.slide(2);
+
+						slides[2].h3.addEventListener( 'transitionend', callback );
+					} );
+				});
+
+				// QUnit.test( 'Element specific data-auto-animate-duration', assert => {
+				// 	assert.timeout( 400 );
+				// 	assert.expect( 1 );
+
+				// 	return new Promise( resolve => {
+				// 		let callback = () => {
+				// 			slides[1].h1.removeEventListener( 'transitionend', callback );
+				// 			assert.ok( true, 'Transition ended within time window' );
+				// 			resolve()
+				// 		}
+
+
+				// 		Reveal.slide(1);
+				// 		slides[1].h1.addEventListener( 'transitionend', callback );
+				// 	} );
+				// });
+
+			} );
+		</script>
+
+	</body>
+</html>
diff --git a/inst/reveal.js-4.2.1/test/test-dependencies-async.html b/inst/reveal.js-4.2.1/test/test-dependencies-async.html
new file mode 100644
index 0000000..14a9b69
--- /dev/null
+++ b/inst/reveal.js-4.2.1/test/test-dependencies-async.html
@@ -0,0 +1,77 @@
+<!doctype html>
+<html lang="en">
+
+	<head>
+		<meta charset="utf-8">
+
+		<title>reveal.js - Test Async Dependencies</title>
+
+		<link rel="stylesheet" href="../dist/reveal.css">
+		<link rel="stylesheet" href="../node_modules/qunit/qunit/qunit.css">
+		<script src="../node_modules/qunit/qunit/qunit.js"></script>
+	</head>
+
+	<body style="overflow: auto;">
+
+		<div id="qunit"></div>
+		<div id="qunit-fixture"></div>
+
+		<div class="reveal" style="display: none;">
+
+			<div class="slides">
+
+				<section>Slide content</section>
+
+			</div>
+
+		</div>
+
+		<script src="../dist/reveal.js"></script>
+		<script>
+			var	externalScriptSequence = '';
+			var scriptCount = 0;
+
+			QUnit.config.autostart = false;
+			QUnit.module( 'Async Dependencies' );
+
+			QUnit.test( 'Async scripts are loaded', function( assert ) {
+				assert.expect( 5 );
+				var done = assert.async( 5 );
+
+				function callback( event ) {
+					if( externalScriptSequence.length === 1 ) {
+						assert.ok( externalScriptSequence === 'A', 'first callback was sync script' );
+						done();
+					}
+					else {
+						assert.ok( true, 'async script loaded' );
+						done();
+					}
+
+					if( externalScriptSequence.length === 4 ) {
+						assert.ok( 	externalScriptSequence.indexOf( 'A' ) !== -1 &&
+									externalScriptSequence.indexOf( 'B' ) !== -1 &&
+									externalScriptSequence.indexOf( 'C' ) !== -1 &&
+									externalScriptSequence.indexOf( 'D' ) !== -1, 'four unique scripts were loaded' );
+						done();
+					}
+
+					scriptCount ++;
+				}
+
+				Reveal.initialize({
+					dependencies: [
+						{ src: 'assets/external-script-a.js', async: false, callback: callback },
+						{ src: 'assets/external-script-b.js', async: true, callback: callback },
+						{ src: 'assets/external-script-c.js', async: true, callback: callback },
+						{ src: 'assets/external-script-d.js', async: true, callback: callback }
+					]
+				});
+			});
+
+			QUnit.start();
+
+		</script>
+
+	</body>
+</html>
diff --git a/inst/reveal.js-4.2.1/test/test-dependencies.html b/inst/reveal.js-4.2.1/test/test-dependencies.html
new file mode 100644
index 0000000..fdfe196
--- /dev/null
+++ b/inst/reveal.js-4.2.1/test/test-dependencies.html
@@ -0,0 +1,51 @@
+<!doctype html>
+<html lang="en">
+
+	<head>
+		<meta charset="utf-8">
+
+		<title>reveal.js - Test Dependencies</title>
+
+		<link rel="stylesheet" href="../dist/reveal.css">
+		<link rel="stylesheet" href="../node_modules/qunit/qunit/qunit.css">
+		<script src="../node_modules/qunit/qunit/qunit.js"></script>
+	</head>
+
+	<body style="overflow: auto;">
+
+		<div id="qunit"></div>
+		<div id="qunit-fixture"></div>
+
+		<div class="reveal" style="display: none;">
+
+			<div class="slides">
+
+				<section>Slide content</section>
+
+			</div>
+
+		</div>
+
+		<script src="../dist/reveal.js"></script>
+		<script>
+			window.externalScriptSequence = '';
+
+			Reveal.initialize({
+				dependencies: [
+					{ src: 'assets/external-script-a.js' },
+					{ src: 'assets/external-script-b.js' },
+					{ src: 'assets/external-script-c.js' }
+				]
+			}).then( () => {
+
+				QUnit.module( 'Dependencies' );
+
+				QUnit.test( 'Load synchronous scripts', function( assert ) {
+					assert.strictEqual( window.externalScriptSequence, 'ABC', 'Loaded and executed in order' );
+				});
+
+			} );
+		</script>
+
+	</body>
+</html>
diff --git a/inst/reveal.js-4.2.1/test/test-grid-navigation.html b/inst/reveal.js-4.2.1/test/test-grid-navigation.html
new file mode 100644
index 0000000..e35baf4
--- /dev/null
+++ b/inst/reveal.js-4.2.1/test/test-grid-navigation.html
@@ -0,0 +1,71 @@
+<!doctype html>
+<html lang="en">
+
+	<head>
+		<meta charset="utf-8">
+
+		<title>reveal.js - Test Grid</title>
+
+		<link rel="stylesheet" href="../dist/reveal.css">
+		<link rel="stylesheet" href="../node_modules/qunit/qunit/qunit.css">
+		<script src="../node_modules/qunit/qunit/qunit.js"></script>
+	</head>
+
+	<body style="overflow: auto;">
+
+		<div id="qunit"></div>
+		<div id="qunit-fixture"></div>
+
+		<div class="reveal" style="display: none;">
+
+			<div class="slides">
+
+				<section>0</section>
+				<section>
+					<section>1.1</section>
+					<section>1.2</section>
+					<section>1.3</section>
+					<section>1.4</section>
+				</section>
+				<section>
+					<section>2.1</section>
+					<section>2.2</section>
+					<section>2.3</section>
+					<section>2.4</section>
+				</section>
+
+			</div>
+
+		</div>
+
+		<script src="../dist/reveal.js"></script>
+		<script>
+			Reveal.initialize().then( () => {
+
+				QUnit.module( 'Grid Navigation' );
+
+				QUnit.test( 'Disabled', function( assert ) {
+					Reveal.right();
+					Reveal.down();
+					Reveal.down();
+					assert.deepEqual( Reveal.getIndices(), { h: 1, v: 2, f: undefined }, 'Correct starting point' );
+					Reveal.right();
+					assert.deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: undefined }, 'Moves to top when going to adjacent stack' );
+				});
+
+				QUnit.test( 'Enabled', function( assert ) {
+					Reveal.configure({ navigationMode: 'grid' });
+					Reveal.slide( 0, 0 );
+					Reveal.right();
+					Reveal.down();
+					Reveal.down();
+					assert.deepEqual( Reveal.getIndices(), { h: 1, v: 2, f: undefined }, 'Correct starting point' );
+					Reveal.right();
+					assert.deepEqual( Reveal.getIndices(), { h: 2, v: 2, f: undefined }, 'Remains at same vertical index when going to adjacent stack' );
+				});
+
+			} );
+		</script>
+
+	</body>
+</html>
diff --git a/inst/reveal.js-4.2.1/test/test-iframe-backgrounds.html b/inst/reveal.js-4.2.1/test/test-iframe-backgrounds.html
new file mode 100644
index 0000000..825e85b
--- /dev/null
+++ b/inst/reveal.js-4.2.1/test/test-iframe-backgrounds.html
@@ -0,0 +1,98 @@
+<!doctype html>
+<html lang="en">
+
+	<head>
+		<meta charset="utf-8">
+
+		<title>reveal.js - Test Iframe Backgrounds</title>
+
+		<link rel="stylesheet" href="../dist/reveal.css">
+		<link rel="stylesheet" href="../node_modules/qunit/qunit/qunit.css">
+		<script src="../node_modules/qunit/qunit/qunit.js"></script>
+	</head>
+
+	<body style="overflow: auto;">
+
+		<div id="qunit"></div>
+		<div id="qunit-fixture"></div>
+
+		<div class="reveal" style="display: none;">
+
+			<div class="slides">
+
+				<section data-background-iframe="https://revealjs.com">1</section>
+				<section data-background-iframe="https://revealjs.com">2</section>
+				<section data-background-iframe="https://revealjs.com" data-preload>3</section>
+				<section data-background-iframe="https://revealjs.com">4</section>
+				<section data-background-iframe="https://revealjs.com">5</section>
+				<section data-background-iframe="https://revealjs.com">6</section>
+
+			</div>
+
+		</div>
+
+		<script src="../dist/reveal.js"></script>
+		<script>
+
+			Reveal.initialize({ viewDistance: 3 }).then( () => {
+
+				function getIframe( index ) {
+					return document.querySelectorAll( '.slide-background' )[index].querySelector( 'iframe' );
+				}
+
+				QUnit.module( 'Iframe' );
+
+				QUnit.test( 'Using default settings', function( assert ) {
+
+					Reveal.slide(0);
+					assert.strictEqual( getIframe(1).hasAttribute( 'src' ), false, 'not preloaded when within viewDistance' );
+
+					Reveal.slide(1);
+					assert.strictEqual( getIframe(1).hasAttribute( 'src' ), true, 'loaded when slide becomes visible' );
+
+					Reveal.slide(0);
+					assert.strictEqual( getIframe(1).hasAttribute( 'src' ), false, 'unloaded when slide becomes invisible' );
+
+				});
+
+				QUnit.test( 'Using data-preload', function( assert ) {
+
+					Reveal.slide(1);
+					assert.strictEqual( getIframe(2).hasAttribute( 'src' ), true, 'preloaded within viewDistance' );
+					assert.strictEqual( getIframe(1).hasAttribute( 'src' ), true, 'loaded when slide becomes visible' );
+
+					Reveal.slide(0);
+					assert.strictEqual( getIframe(3).hasAttribute( 'src' ), false, 'unloads outside of viewDistance' );
+
+				});
+
+				QUnit.test( 'Using preloadIframes: true', function( assert ) {
+
+					Reveal.configure({ preloadIframes: true });
+
+					Reveal.slide(1);
+					assert.strictEqual( getIframe(0).hasAttribute( 'src' ), true, 'preloaded within viewDistance' );
+					assert.strictEqual( getIframe(1).hasAttribute( 'src' ), true, 'preloaded within viewDistance' );
+					assert.strictEqual( getIframe(2).hasAttribute( 'src' ), true, 'preloaded within viewDistance' );
+
+				});
+
+				QUnit.test( 'Using preloadIframes: false', function( assert ) {
+
+					Reveal.configure({ preloadIframes: false });
+
+					Reveal.slide(0);
+					assert.strictEqual( getIframe(1).hasAttribute( 'src' ), false, 'not preloaded within viewDistance' );
+					assert.strictEqual( getIframe(2).hasAttribute( 'src' ), false, 'not preloaded within viewDistance' );
+
+					Reveal.slide(1);
+					assert.strictEqual( getIframe(1).hasAttribute( 'src' ), true, 'loaded when slide becomes visible' );
+
+
+				});
+
+			} );
+		</script>
+
+	</body>
+</html>
diff --git a/inst/reveal.js-4.2.1/test/test-iframes.html b/inst/reveal.js-4.2.1/test/test-iframes.html
new file mode 100644
index 0000000..55268c2
--- /dev/null
+++ b/inst/reveal.js-4.2.1/test/test-iframes.html
@@ -0,0 +1,102 @@
+<!doctype html>
+<html lang="en">
+
+	<head>
+		<meta charset="utf-8">
+
+		<title>reveal.js - Test Iframes</title>
+
+		<link rel="stylesheet" href="../dist/reveal.css">
+		<link rel="stylesheet" href="../node_modules/qunit/qunit/qunit.css">
+		<script src="../node_modules/qunit/qunit/qunit.js"></script>
+	</head>
+
+	<body style="overflow: auto;">
+
+		<div id="qunit"></div>
+		<div id="qunit-fixture"></div>
+
+		<div class="reveal" style="display: none;">
+
+			<div class="slides">
+
+				<section>1</section>
+				<section>2</section>
+				<section>
+					<iframe class="default-iframe" data-src="#"></iframe>
+					<iframe class="preload-iframe" data-src="#" data-preload></iframe>
+				</section>
+
+			</div>
+
+		</div>
+
+		<script src="../dist/reveal.js"></script>
+		<script>
+
+			Reveal.initialize({ viewDistance: 2 }).then( () => {
+
+				var defaultIframe = document.querySelector( '.default-iframe' ),
+					preloadIframe = document.querySelector( '.preload-iframe' );
+
+				QUnit.module( 'Iframe' );
+
+				QUnit.test( 'Using default settings', function( assert ) {
+
+					Reveal.slide(1);
+					assert.strictEqual( defaultIframe.hasAttribute( 'src' ), false, 'not preloaded when within viewDistance' );
+
+					Reveal.slide(2);
+					assert.strictEqual( defaultIframe.hasAttribute( 'src' ), true, 'loaded when slide becomes visible' );
+
+					Reveal.slide(1);
+					assert.strictEqual( defaultIframe.hasAttribute( 'src' ), false, 'unloaded when slide becomes invisible' );
+
+				});
+
+				QUnit.test( 'Using data-preload', function( assert ) {
+
+					Reveal.slide(1);
+					assert.strictEqual( preloadIframe.hasAttribute( 'src' ), true, 'preloaded within viewDistance' );
+
+					Reveal.slide(2);
+					assert.strictEqual( preloadIframe.hasAttribute( 'src' ), true, 'loaded when slide becoems visible' );
+
+					Reveal.slide(0);
+					assert.strictEqual( preloadIframe.hasAttribute( 'src' ), false, 'unloads outside of viewDistance' );
+
+				});
+
+				QUnit.test( 'Using preloadIframes: true', function( assert ) {
+
+					Reveal.configure({ preloadIframes: true });
+
+					Reveal.slide(1);
+					assert.strictEqual( defaultIframe.hasAttribute( 'src' ), true, 'preloaded within viewDistance' );
+					assert.strictEqual( preloadIframe.hasAttribute( 'src' ), true, 'preloaded within viewDistance' );
+
+					Reveal.slide(2);
+					assert.strictEqual( defaultIframe.hasAttribute( 'src' ), true, 'loaded when slide becomes visible' );
+					assert.strictEqual( preloadIframe.hasAttribute( 'src' ), true, 'loaded when slide becomes visible' );
+
+				});
+
+				QUnit.test( 'Using preloadIframes: false', function( assert ) {
+
+					Reveal.configure({ preloadIframes: false });
+
+					Reveal.slide(0);
+					assert.strictEqual( defaultIframe.hasAttribute( 'src' ), false, 'not preloaded within viewDistance' );
+					assert.strictEqual( preloadIframe.hasAttribute( 'src' ), false, 'not preloaded within viewDistance' );
+
+					Reveal.slide(2);
+					assert.strictEqual( defaultIframe.hasAttribute( 'src' ), true, 'loaded when slide becomes visible' );
+					assert.strictEqual( preloadIframe.hasAttribute( 'src' ), true, 'loaded when slide becomes visible' );
+
+				});
+
+			} );
+		</script>
+
+	</body>
+</html>
diff --git a/inst/reveal.js-4.2.1/test/test-markdown.html b/inst/reveal.js-4.2.1/test/test-markdown.html
new file mode 100644
index 0000000..b0ead9c
--- /dev/null
+++ b/inst/reveal.js-4.2.1/test/test-markdown.html
@@ -0,0 +1,480 @@
+<!doctype html>
+<html lang="en">
+
+	<head>
+		<meta charset="utf-8">
+
+		<title>reveal.js - Test Markdown</title>
+
+		<link rel="stylesheet" href="../dist/reveal.css">
+		<link rel="stylesheet" href="../node_modules/qunit/qunit/qunit.css">
+		<script src="../node_modules/qunit/qunit/qunit.js"></script>
+	</head>
+
+	<body style="overflow: auto;">
+
+		<div id="qunit"></div>
+		<div id="qunit-fixture"></div>
+
+		<div class="reveal deck1" style="display: none;">
+			<div class="slides">
+				<section data-markdown data-separator="^\n---\n$" data-separator-vertical="^\n--\n$">
+					<script type="text/template">
+						## Slide 1.1
+
+						--
+
+						## Slide 1.2
+
+						---
+
+						## Slide 2
+					</script>
+				</section>
+			</div>
+		</div>
+
+		<div class="reveal deck2" style="display: none;">
+			<div class="slides">
+				<section data-markdown="simple.md" data-separator="^\r?\n\r?\n\r?\n" data-separator-vertical="^\r?\n\r?\n"></section>
+			</div>
+		</div>
+
+		<div class="reveal deck3" style="display: none;">
+			<div class="slides">
+				<section 	data-markdown data-separator="^\n\n\n"
+									data-separator-vertical="^\n\n"
+									data-separator-notes="^Note:"
+									data-attributes="--\s(.*?)$"
+									data-charset="utf-8">
+					<script type="text/template">
+						# Test attributes in Markdown
+						## Slide 1
+
+
+
+						## Slide 2
+						<!-- -- id="slide2" data-transition="zoom" data-background="#A0C66B" -->
+
+
+						## Slide 2.1
+						<!-- -- data-background="#ff0000" data-transition="fade" -->
+
+
+						## Slide 2.2
+						[Link to Slide2](#/slide2)
+
+
+
+						## Slide 3
+						<!-- -- data-transition="zoom" data-background="#C6916B" -->
+
+
+
+						## Slide 4
+					</script>
+				</section>
+
+				<section 	data-markdown data-separator="^\n\n\n"
+									data-separator-vertical="^\n\n"
+									data-separator-notes="^Note:"
+									data-charset="utf-8">
+					<script type="text/template">
+						# Test attributes in Markdown with default separator
+						## Slide 1 Def
+
+
+
+						## Slide 2 Def
+						<!-- .slide: id="slide2def" data-transition="concave" data-background="#A7C66B" -->
+
+
+						## Slide 2.1 Def
+						<!-- .slide: data-background="#f70000" data-transition="page" -->
+
+
+						## Slide 2.2 Def
+						[Link to Slide2](#/slide2def)
+
+
+
+						## Slide 3 Def
+						<!-- .slide: data-transition="concave" data-background="#C7916B" -->
+
+
+
+						## Slide 4
+					</script>
+				</section>
+
+				<section data-markdown>
+					<script type="text/template">
+						<!-- .slide: data-background="#ff0000" -->
+						## Hello world
+					</script>
+				</section>
+
+				<section data-markdown>
+					<script type="text/template">
+						## Hello world
+						<!-- .slide: data-background="#ff0000" -->
+					</script>
+				</section>
+
+				<section data-markdown>
+					<script type="text/template">
+						## Hello world
+
+						Test
+						<!-- .slide: data-background="#ff0000" -->
+
+						More Test
+					</script>
+				</section>
+			</div>
+		</div>
+
+		<div class="reveal deck4" style="display: none;">
+			<div class="slides">
+				<section data-markdown>
+					<script type="text/template">
+						## Testing Markdown Options
+
+						This "slide" should contain 'smart' quotes.
+					</script>
+				</section>
+			</div>
+		</div>
+
+		<div class="reveal deck5" style="display: none;">
+			<div class="slides">
+				<section data-markdown data-separator="^\n---\n$" data-separator-vertical="^\n--\n$" data-element-attributes="{_\s*?([^}]+?)}">>
+					<script type="text/template">
+						## Slide 1.1
+						<!-- {_class="fragment fade-out" data-fragment-index="1"} -->
+
+						--
+
+						## Slide 1.2
+						<!-- {_class="fragment shrink"} -->
+
+						Paragraph 1
+						<!-- {_class="fragment grow"} -->
+
+						Paragraph 2
+						<!-- {_class="fragment grow"} -->
+
+						- list item 1 <!-- {_class="fragment grow"} -->
+						- list item 2 <!-- {_class="fragment grow"} -->
+						- list item 3 <!-- {_class="fragment grow"} -->
+
+
+						---
+
+						## Slide 2
+
+
+						Paragraph 1.2  
+						multi-line <!-- {_class="fragment highlight-red"} -->
+
+						Paragraph 2.2 <!-- {_class="fragment highlight-red"} -->
+
+						Paragraph 2.3 <!-- {_class="fragment highlight-red"} -->
+
+						Paragraph 2.4 <!-- {_class="fragment highlight-red"} -->
+
+						- list item 1 <!-- {_class="fragment highlight-green"} -->
+						- list item 2<!-- {_class="fragment highlight-green"} -->
+						- list item 3<!-- {_class="fragment highlight-green"} -->
+						- list item 4
+						<!-- {_class="fragment highlight-green"} -->
+						- list item 5<!-- {_class="fragment highlight-green"} -->
+
+						Test
+
+						![Example Picture](examples/assets/image2.png) <!-- {_class="reveal stretch"} -->
+
+					</script>
+				</section>
+
+
+
+				<section 	data-markdown data-separator="^\n\n\n"
+									data-separator-vertical="^\n\n"
+									data-separator-notes="^Note:"
+									data-charset="utf-8">
+					<script type="text/template">
+						# Test attributes in Markdown with default separator
+						## Slide 1 Def <!-- .element: class="fragment highlight-red" data-fragment-index="1" -->
+
+
+						## Slide 2 Def
+						<!-- .element: class="fragment highlight-red" -->
+
+					</script>
+				</section>
+
+				<section data-markdown>
+				  <script type="text/template">
+					## Hello world
+					A paragraph
+					<!-- .element: class="fragment highlight-blue" -->
+				  </script>
+				</section>
+
+				<section data-markdown>
+				  <script type="text/template">
+					## Hello world
+
+					Multiple  
+					Line
+					<!-- .element: class="fragment highlight-blue" -->
+				  </script>
+				</section>
+
+				<section data-markdown>
+				  <script type="text/template">
+					## Hello world
+
+					Test<!-- .element: class="fragment highlight-blue" -->
+
+					More Test
+				  </script>
+				</section>
+			</div>
+		</div>
+
+		<div class="reveal deck6" style="display: block;">
+			<div class="slides">
+				<section data-markdown class="defaults">
+					<script type="text/template">
+						```
+						code
+						```
+					</script>
+				</section>
+				<section data-markdown class="with-language">
+					<script type="text/template">
+						```javascript
+						code
+						```
+					</script>
+				</section>
+				<section data-markdown class="with-line-numbers">
+					<script type="text/template">
+						```[]
+						code
+						```
+					</script>
+				</section>
+				<section data-markdown class="with-line-highlights">
+					<script type="text/template">
+						```[1,2,3]
+						code
+						```
+					</script>
+				</section>
+				<section data-markdown class="with-line-highlights-and-lanugage">
+					<script type="text/template">
+						```javascript [1,2,3]
+						code
+						```
+					</script>
+				</section>
+				<section data-markdown class="with-code-in-fragment">
+					<script type="text/template">
+					```js
+					foo.bar();
+					```
+
+					<!-- .element: class="fragment" -->
+					</script>
+				</section>
+			</div>
+		</div>
+
+		<script type="module">
+			import Reveal from '../dist/reveal.esm.js'
+			import Markdown from '../plugin/markdown/markdown.esm.js'
+			import Highlight from '../plugin/highlight/highlight.esm.js'
+
+			let deck1 = new Reveal( document.querySelector( '.deck1' ), { plugins: [ Markdown ] })
+			deck1.addEventListener( 'ready', function() {
+
+				QUnit.module( 'Inline' );
+
+				QUnit.test( 'Vertical separator', function( assert ) {
+					assert.strictEqual( deck1.getRevealElement().querySelectorAll( '.reveal .slides>section>section' ).length, 2, 'found two slides' );
+				});
+
+				QUnit.test( 'Horizontal separator', function( assert ) {
+					assert.strictEqual( deck1.getRevealElement().querySelectorAll( '.reveal .slides>section' ).length, 2, 'found two slides' );
+				});
+
+			} );
+
+			let deck2 = new Reveal( document.querySelector( '.deck2' ), { plugins: [ Markdown ] })
+			deck2.addEventListener( 'ready', function() {
+
+				QUnit.module( 'External' );
+
+				QUnit.test( 'Vertical separator', function( assert ) {
+					assert.strictEqual( deck2.getRevealElement().querySelectorAll( '.reveal .slides>section>section' ).length, 2, 'found two slides' );
+				});
+
+				QUnit.test( 'Horizontal separator', function( assert ) {
+					assert.strictEqual( deck2.getRevealElement().querySelectorAll( '.reveal .slides>section' ).length, 2, 'found two slides' );
+				});
+
+			} );
+
+			let deck3 = new Reveal( document.querySelector( '.deck3' ), { plugins: [ Markdown ] })
+			deck3.addEventListener( 'ready', function() {
+
+				QUnit.module( 'Slide Attributes' );
+
+				QUnit.test( 'Id on slide', function( assert ) {
+					assert.strictEqual( deck3.getRevealElement().querySelectorAll( '.reveal .slides>section>section#slide2' ).length, 1, 'found one slide with id slide2' );
+					assert.strictEqual( deck3.getRevealElement().querySelectorAll( '.reveal .slides>section>section a[href="#/slide2"]' ).length, 1, 'found one slide with a link to slide2' );
+				});
+
+				QUnit.test( 'data-background attributes', function( assert ) {
+					assert.strictEqual( deck3.getRevealElement().querySelectorAll( '.reveal .slides>section>section[data-background="#A0C66B"]' ).length, 1, 'found one vertical slide with data-background="#A0C66B"' );
+					assert.strictEqual( deck3.getRevealElement().querySelectorAll( '.reveal .slides>section>section[data-background="#ff0000"]' ).length, 1, 'found one vertical slide with data-background="#ff0000"' );
+					assert.strictEqual( deck3.getRevealElement().querySelectorAll( '.reveal .slides>section[data-background="#C6916B"]' ).length, 1, 'found one slide with data-background="#C6916B"' );
+				});
+
+				QUnit.test( 'data-transition attributes', function( assert ) {
+					assert.strictEqual( deck3.getRevealElement().querySelectorAll( '.reveal .slides>section>section[data-transition="zoom"]' ).length, 1, 'found one vertical slide with data-transition="zoom"' );
+					assert.strictEqual( deck3.getRevealElement().querySelectorAll( '.reveal .slides>section>section[data-transition="fade"]' ).length, 1, 'found one vertical slide with data-transition="fade"' );
+					assert.strictEqual( deck3.getRevealElement().querySelectorAll( '.reveal .slides section [data-transition="zoom"]' ).length, 1, 'found one slide with data-transition="zoom"' );
+				});
+
+				QUnit.test( 'data-background attributes with default separator', function( assert ) {
+					assert.strictEqual( deck3.getRevealElement().querySelectorAll( '.reveal .slides>section>section[data-background="#A7C66B"]' ).length, 1, 'found one vertical slide with data-background="#A0C66B"' );
+					assert.strictEqual( deck3.getRevealElement().querySelectorAll( '.reveal .slides>section>section[data-background="#f70000"]' ).length, 1, 'found one vertical slide with data-background="#ff0000"' );
+					assert.strictEqual( deck3.getRevealElement().querySelectorAll( '.reveal .slides>section[data-background="#C7916B"]' ).length, 1, 'found one slide with data-background="#C6916B"' );
+				});
+
+				QUnit.test( 'data-transition attributes with default separator', function( assert ) {
+					assert.strictEqual( deck3.getRevealElement().querySelectorAll( '.reveal .slides>section>section[data-transition="concave"]' ).length, 1, 'found one vertical slide with data-transition="zoom"' );
+					assert.strictEqual( deck3.getRevealElement().querySelectorAll( '.reveal .slides>section>section[data-transition="page"]' ).length, 1, 'found one vertical slide with data-transition="fade"' );
+					assert.strictEqual( deck3.getRevealElement().querySelectorAll( '.reveal .slides section [data-transition="concave"]' ).length, 1, 'found one slide with data-transition="zoom"' );
+				});
+
+				QUnit.test( 'data-transition attributes with inline content', function( assert ) {
+					assert.strictEqual( deck3.getRevealElement().querySelectorAll( '.reveal .slides>section[data-background="#ff0000"]' ).length, 3, 'found three horizontal slides with data-background="#ff0000"' );
+				});
+
+			} );
+
+			let deck4 = new Reveal( document.querySelector( '.deck4' ), {
+				markdown: {
+					smartypants: true
+				},
+				plugins: [ Markdown ]
+			})
+			deck4.addEventListener( 'ready', function() {
+
+				QUnit.module( 'Options' );
+
+				QUnit.test( 'Options are set', function( assert ) {
+					assert.strictEqual( deck4.getPlugin( 'markdown' ).marked.defaults.smartypants, true );
+				});
+
+				QUnit.test( 'Smart quotes are activated', function( assert ) {
+					var text = deck4.getRevealElement().querySelector( '.reveal .slides>section>p' ).textContent;
+
+					assert.strictEqual( /['"]/.test( text ), false );
+					assert.strictEqual( /[“”‘’]/.test( text ), true );
+				});
+
+			} );
+
+			let deck5 = new Reveal( document.querySelector( '.deck5' ), { plugins: [ Markdown ] })
+			deck5.addEventListener( 'ready', function() {
+
+				QUnit.module( 'Element Attributes' );
+
+				QUnit.test( 'Vertical separator', function( assert ) {
+					assert.strictEqual( deck5.getRevealElement().querySelectorAll( '.reveal .slides>section>section' ).length, 4, 'found four slides' );
+				});
+
+				QUnit.test( 'Attributes on element header in vertical slides', function( assert ) {
+					assert.strictEqual( deck5.getRevealElement().querySelectorAll( '.reveal .slides section>section h2.fragment.fade-out' ).length, 1, 'found one vertical slide with class fragment.fade-out on header' );
+					assert.strictEqual( deck5.getRevealElement().querySelectorAll( '.reveal .slides section>section h2.fragment.shrink' ).length, 1, 'found one vertical slide with class fragment.shrink on header' );
+				});
+
+				QUnit.test( 'Attributes on element paragraphs in vertical slides', function( assert ) {
+					assert.strictEqual( deck5.getRevealElement().querySelectorAll( '.reveal .slides section>section p.fragment.grow' ).length, 2, 'found a vertical slide with two paragraphs with class fragment.grow' );
+				});
+
+				QUnit.test( 'Attributes on element list items in vertical slides', function( assert ) {
+					assert.strictEqual( deck5.getRevealElement().querySelectorAll( '.reveal .slides section>section li.fragment.grow' ).length, 3, 'found a vertical slide with three list items with class fragment.grow' );
+				});
+
+				QUnit.test( 'Attributes on element paragraphs in horizontal slides', function( assert ) {
+					assert.strictEqual( deck5.getRevealElement().querySelectorAll( '.reveal .slides section p.fragment.highlight-red' ).length, 4, 'found a horizontal slide with four paragraphs with class fragment.grow' );
+				});
+
+				QUnit.test( 'Attributes on element list items in horizontal slides', function( assert ) {
+					assert.strictEqual( deck5.getRevealElement().querySelectorAll( '.reveal .slides section li.fragment.highlight-green' ).length, 5, 'found a horizontal slide with five list items with class fragment.roll-in' );
+				});
+
+				QUnit.test( 'Attributes on element image in horizontal slides', function( assert ) {
+					assert.strictEqual( deck5.getRevealElement().querySelectorAll( '.reveal .slides section img.reveal.stretch' ).length, 1, 'found a horizontal slide with stretched image, class img.reveal.stretch' );
+				});
+
+				QUnit.test( 'Attributes on elements in vertical slides with default element attribute separator', function( assert ) {
+					assert.strictEqual( deck5.getRevealElement().querySelectorAll( '.reveal .slides section h2.fragment.highlight-red' ).length, 2, 'found two h2 titles with fragment highlight-red in vertical slides with default element attribute separator' );
+				});
+
+				QUnit.test( 'Attributes on elements in single slides with default element attribute separator', function( assert ) {
+					assert.strictEqual( deck5.getRevealElement().querySelectorAll( '.reveal .slides section p.fragment.highlight-blue' ).length, 3, 'found three elements with fragment highlight-blue in single slide with default element attribute separator' );
+				});
+
+			} );
+
+			let deck6 = new Reveal( document.querySelector( '.deck6' ), {
+				plugins: [ Markdown, Highlight ]
+			})
+			deck6.addEventListener( 'ready', function() {
+
+				QUnit.module( 'Code Blocks' );
+
+				QUnit.test( 'Defaults to no line numbers', function( assert ) {
+					assert.strictEqual( deck6.getRevealElement().querySelectorAll( '.defaults .hljs:not([data-line-numbers])' ).length, 1 );
+				});
+
+				QUnit.test( 'Can set language', function( assert ) {
+					assert.strictEqual( deck6.getRevealElement().querySelectorAll( '.with-language .hljs.javascript:not([data-line-numbers])' ).length, 1 );
+				});
+
+				QUnit.test( '```[] enables line numbers', function( assert ) {
+					assert.strictEqual( deck6.getRevealElement().querySelectorAll( '.with-line-numbers .hljs[data-line-numbers=""]' ).length, 1 );
+				});
+
+				QUnit.test( '```[1,2,3] enables line highlights', function( assert ) {
+					assert.strictEqual( deck6.getRevealElement().querySelectorAll( '.with-line-highlights .hljs[data-line-numbers="1,2,3"]' ).length, 1 );
+				});
+
+				QUnit.test( '```javascript [1,2,3] enables line highlights and sets language', function( assert ) {
+					assert.strictEqual( deck6.getRevealElement().querySelectorAll( '.with-line-highlights-and-lanugage .hljs.javascript[data-line-numbers="1,2,3"]' ).length, 1 );
+				});
+				
+				QUnit.test( '```block should allow custom fragment', function( assert ) {
+					assert.strictEqual( deck6.getRevealElement().querySelectorAll( '.with-code-in-fragment pre.fragment' ).length, 1 );
+				});
+
+			} );
+
+			deck1.initialize();
+			deck2.initialize();
+			deck3.initialize();
+			deck4.initialize();
+			deck5.initialize();
+			deck6.initialize();
+		</script>
+
+	</body>
+</html>
diff --git a/inst/reveal.js-4.2.1/test/test-multiple-instances-es5.html b/inst/reveal.js-4.2.1/test/test-multiple-instances-es5.html
new file mode 100644
index 0000000..5f2a49b
--- /dev/null
+++ b/inst/reveal.js-4.2.1/test/test-multiple-instances-es5.html
@@ -0,0 +1,85 @@
+<!doctype html>
+<html lang="en">
+
+	<head>
+		<meta charset="utf-8">
+
+		<title>reveal.js - Test Iframes</title>
+
+		<link rel="stylesheet" href="../dist/reveal.css">
+		<link rel="stylesheet" href="../node_modules/qunit/qunit/qunit.css">
+		<script src="../node_modules/qunit/qunit/qunit.js"></script>
+	</head>
+
+	<body style="overflow: auto;">
+
+		<div id="qunit"></div>
+		<div id="qunit-fixture"></div>
+
+		<div class="deck1">
+			<div class="reveal" style="display: none;">
+				<div class="slides">
+					<section>1.1</section>
+					<section>1.2</section>
+					<section>1.3</section>
+				</div>
+			</div>
+		</div>
+
+		<div class="deck2">
+			<div class="reveal" style="display: none;">
+				<div class="slides">
+					<section>2.1</section>
+					<section>2.2</section>
+					<section>2.3</section>
+				</div>
+			</div>
+		</div>
+
+		<script src="../dist/reveal.js"></script>
+		<script src="../plugin/zoom/zoom.js"></script>
+		<script>
+
+			QUnit.module( 'Multiple reveal.js instances' );
+
+			let r1 = new Reveal( document.querySelector( '.deck1 .reveal' ), {
+				embedded: true,
+				keyboard: true,
+				plugins: [RevealZoom()]
+			} );
+			r1.initialize();
+
+			let r2 = new Reveal( document.querySelector( '.deck2 .reveal' ), {
+				embedded: true,
+				keyboard: false
+			} );
+			r2.initialize();
+
+			QUnit.test( 'Can make independent changes', function( assert ) {
+
+				r1.slide(1);
+				r2.slide(2);
+				assert.strictEqual( r1.getCurrentSlide().textContent, '1.2' );
+				assert.strictEqual( r2.getCurrentSlide().textContent, '2.3' );
+
+				r2.toggleOverview( true );
+				assert.strictEqual( r1.isOverview(), false );
+				assert.strictEqual( r2.isOverview(), true );
+				r2.toggleOverview( false );
+
+				assert.strictEqual( r1.getConfig().keyboard, true );
+				assert.strictEqual( r2.getConfig().keyboard, false );
+
+			});
+
+			QUnit.test( 'Can register plugins independently', function( assert ) {
+
+				assert.ok( r1.hasPlugin( 'zoom' ) );
+				assert.notOk( r2.hasPlugin( 'zoom' ) );
+
+			});
+
+		</script>
+
+	</body>
+</html>
diff --git a/inst/reveal.js-4.2.1/test/test-multiple-instances.html b/inst/reveal.js-4.2.1/test/test-multiple-instances.html
new file mode 100644
index 0000000..c831b62
--- /dev/null
+++ b/inst/reveal.js-4.2.1/test/test-multiple-instances.html
@@ -0,0 +1,103 @@
+<!doctype html>
+<html lang="en">
+
+	<head>
+		<meta charset="utf-8">
+
+		<title>reveal.js - Test Iframes</title>
+
+		<link rel="stylesheet" href="../dist/reveal.css">
+		<link rel="stylesheet" href="../node_modules/qunit/qunit/qunit.css">
+		<script src="../node_modules/qunit/qunit/qunit.js"></script>
+	</head>
+
+	<body style="overflow: auto;">
+
+		<div id="qunit"></div>
+		<div id="qunit-fixture"></div>
+
+		<div class="deck1">
+			<div class="reveal" style="display: none;">
+				<div class="slides">
+					<section>1.1</section>
+					<section data-state="deck1slide2">1.2</section>
+					<section>1.3</section>
+				</div>
+			</div>
+		</div>
+
+		<div class="deck2">
+			<div class="reveal" style="display: none;">
+				<div class="slides">
+					<section>2.1</section>
+					<section>2.2</section>
+					<section>2.3</section>
+				</div>
+			</div>
+		</div>
+
+		<script type="module">
+
+			import Reveal from '../dist/reveal.esm.js';
+			import Zoom from '../plugin/zoom/zoom.esm.js';
+
+			QUnit.module( 'Multiple reveal.js instances' );
+
+			let r1 = new Reveal( document.querySelector( '.deck1 .reveal' ), {
+				embedded: true,
+				keyboard: true,
+				plugins: [ Zoom ]
+			} );
+			r1.initialize();
+
+			let r2 = new Reveal( document.querySelector( '.deck2 .reveal' ), {
+				embedded: true,
+				keyboard: false
+			} );
+			r2.initialize();
+
+			QUnit.test( 'Can make independent changes', function( assert ) {
+
+				r1.slide(1);
+				r2.slide(2);
+				assert.strictEqual( r1.getCurrentSlide().textContent, '1.2' );
+				assert.strictEqual( r2.getCurrentSlide().textContent, '2.3' );
+
+				r2.toggleOverview( true );
+				assert.strictEqual( r1.isOverview(), false );
+				assert.strictEqual( r2.isOverview(), true );
+				r2.toggleOverview( false );
+
+				assert.strictEqual( r1.getConfig().keyboard, true );
+				assert.strictEqual( r2.getConfig().keyboard, false );
+
+			});
+
+			QUnit.test( 'Can register plugins independently', function( assert ) {
+
+				assert.ok( r1.hasPlugin( 'zoom' ) );
+				assert.notOk( r2.hasPlugin( 'zoom' ) );
+
+			});
+
+			QUnit.test( 'Slide state is set at the viewport level', function( assert ) {
+
+				r1.slide(1);
+
+				assert.ok( r1.getViewportElement().classList.contains( r1.getCurrentSlide().getAttribute( 'data-state' ) ) );
+
+				r1.slide(2);
+
+				assert.ok( !r1.getViewportElement().classList.contains( r1.getCurrentSlide().getAttribute( 'data-state' ) ), 'unset' );
+
+			});
+
+		</script>
+		<script>
+			QUnit.test( 'Reveal does not leak to window', function( assert ) {
+				assert.strictEqual( window.Reveal, undefined );
+			});
+		</script>
+
+	</body>
+</html>
diff --git a/inst/reveal.js-4.2.1/test/test-pdf.html b/inst/reveal.js-4.2.1/test/test-pdf.html
new file mode 100644
index 0000000..1c9d955
--- /dev/null
+++ b/inst/reveal.js-4.2.1/test/test-pdf.html
@@ -0,0 +1,92 @@
+<!doctype html>
+<html lang="en">
+
+	<head>
+		<meta charset="utf-8">
+
+		<title>reveal.js - Test PDF exports</title>
+
+		<link rel="stylesheet" href="../dist/reveal.css">
+		<link rel="stylesheet" href="../node_modules/qunit/qunit/qunit.css">
+		<script src="../node_modules/qunit/qunit/qunit.js"></script>
+	</head>
+
+	<body style="overflow: auto;">
+
+		<div id="qunit"></div>
+  		<div id="qunit-fixture"></div>
+
+		<div class="reveal" style="display: none;">
+
+			<div class="slides">
+
+				<section>
+					<h1>1</h1>
+					<img data-src="">
+				</section>
+
+				<section>
+					<section>
+						<h1>2.1</h1>
+					</section>
+					<section>
+						<h1>2.2</h1>
+					</section>
+					<section>
+						<h1>2.3</h1>
+					</section>
+				</section>
+
+				<section id="fragment-slides">
+					<section>
+						<h1>3.1</h1>
+						<ul>
+							<li class="fragment">4.1</li>
+							<li class="fragment">4.2</li>
+							<li class="fragment">4.3</li>
+						</ul>
+					</section>
+
+					<section>
+						<h1>3.2</h1>
+						<ul>
+							<li class="fragment" data-fragment-index="0">4.1</li>
+							<li class="fragment" data-fragment-index="0">4.2</li>
+						</ul>
+					</section>
+
+					<section>
+						<h1>3.3</h1>
+						<ul>
+							<li class="fragment" data-fragment-index="1">3.3.1</li>
+							<li class="fragment" data-fragment-index="4">3.3.2</li>
+							<li class="fragment" data-fragment-index="4">3.3.3</li>
+						</ul>
+					</section>
+				</section>
+
+				<section>
+					<h1>4</h1>
+				</section>
+
+			</div>
+
+		</div>
+
+		<script src="../dist/reveal.js"></script>
+		<script>
+			Reveal.initialize({ pdf: true }).then( function() {
+
+				// Only one test for now, we're mainly ensuring that there
+				// are no execution errors when running PDF mode
+
+				QUnit.test( 'Reveal.isReady', function( assert ) {
+					assert.strictEqual( Reveal.isReady(), true, 'returns true' );
+				});
+
+			} );
+
+		</script>
+
+	</body>
+</html>
diff --git a/inst/reveal.js-4.2.1/test/test-plugins.html b/inst/reveal.js-4.2.1/test/test-plugins.html
new file mode 100644
index 0000000..7d1a0f9
--- /dev/null
+++ b/inst/reveal.js-4.2.1/test/test-plugins.html
@@ -0,0 +1,107 @@
+<!doctype html>
+<html lang="en">
+
+	<head>
+		<meta charset="utf-8">
+
+		<title>reveal.js - Test Plugins</title>
+
+		<link rel="stylesheet" href="../dist/reveal.css">
+		<link rel="stylesheet" href="../node_modules/qunit/qunit/qunit.css">
+		<script src="../node_modules/qunit/qunit/qunit.js"></script>
+	</head>
+
+	<body style="overflow: auto;">
+
+		<div id="qunit"></div>
+		<div id="qunit-fixture"></div>
+
+		<div class="reveal" style="display: none;">
+
+			<div class="slides">
+
+				<section>Slide content</section>
+
+			</div>
+
+		</div>
+
+		<script src="../dist/reveal.js"></script>
+		<script>
+
+			QUnit.module( 'Plugins' );
+
+			var initCounter = { PluginB: 0, PluginC: 0, PluginD: 0 };
+
+			// Plugin with no init method
+			var PluginA = { id: 'PluginA' };
+
+			// Plugin with init method
+			var PluginB = { id: 'PluginB', init: function() {
+				initCounter['PluginB'] += 1;
+			} };
+
+			// Async plugin with init method
+			var PluginC = { id: 'PluginC', init: function() {
+				return new Promise(function( resolve ) {
+					setTimeout( () => {
+						initCounter['PluginC'] += 1;
+						resolve();
+					}, 1000 );
+				});
+			} };
+
+			// Plugin initialized after reveal.js is ready
+			var PluginD = { id: 'PluginD', init: function() {
+				initCounter['PluginD'] += 1;
+			} };
+
+			var PluginE = { id: 'PluginE' };
+
+			var reveal = new Reveal( document.querySelector( '.reveal' ), {
+				plugins: [ PluginA ]
+			} );
+
+			reveal.registerPlugin( PluginB );
+			reveal.registerPlugin( PluginC );
+
+			reveal.initialize();
+
+			QUnit.test( 'Can initialize synchronously', function( assert ) {
+				assert.strictEqual( initCounter['PluginB'], 1 );
+
+				reveal.registerPlugin( PluginB );
+
+				assert.strictEqual( initCounter['PluginB'], 1, 'prevents duplicate registration' );
+			});
+
+			QUnit.test( 'Can initialize asynchronously', function( assert ) {
+				assert.expect( 3 );
+				var done = assert.async( 2 );
+
+				assert.strictEqual( initCounter['PluginC'], 0, 'async plugin not immediately initialized' );
+
+				reveal.on( 'ready', function() {
+					assert.strictEqual( initCounter['PluginC'], 1, 'finsihed initializing when reveal.js dispatches "ready"' );
+					done();
+
+					reveal.registerPlugin( PluginD );
+					assert.strictEqual( initCounter['PluginD'], 1, 'plugin registered after reveal.js is ready still initiailizes' );
+					done();
+				});
+			} );
+
+			QUnit.test( 'Can check if plugin is registered', function( assert ) {
+				assert.strictEqual( reveal.hasPlugin( 'PluginA' ), true );
+				assert.strictEqual( reveal.hasPlugin( 'PluginE' ), false );
+				reveal.registerPlugin( PluginE );
+				assert.strictEqual( reveal.hasPlugin( 'PluginE' ), true );
+			} );
+
+			QUnit.test( 'Can retrieve plugin instance', function( assert ) {
+				assert.strictEqual( reveal.getPlugin( 'PluginB' ), PluginB );
+			} );
+		</script>
+
+	</body>
+</html>
diff --git a/inst/reveal.js-4.2.1/test/test-state.html b/inst/reveal.js-4.2.1/test/test-state.html
new file mode 100644
index 0000000..ef97e8c
--- /dev/null
+++ b/inst/reveal.js-4.2.1/test/test-state.html
@@ -0,0 +1,136 @@
+<!doctype html>
+<html lang="en">
+
+	<head>
+		<meta charset="utf-8">
+
+		<title>reveal.js - Test State</title>
+
+		<link rel="stylesheet" href="../dist/reveal.css">
+		<link rel="stylesheet" href="../node_modules/qunit/qunit/qunit.css">
+		<script src="../node_modules/qunit/qunit/qunit.js"></script>
+	</head>
+
+	<body style="overflow: auto;">
+
+		<div id="qunit"></div>
+		<div id="qunit-fixture"></div>
+
+		<div class="reveal" style="display: none;">
+
+			<div class="slides">
+
+				<section>No state</section>
+				<section id="slide2" data-state="state1">State 1</section>
+				<section data-state="state1">State 1</section>
+				<section data-state="state2">State 2</section>
+				<section>
+					<section>No state</section>
+					<section data-state="state1">State 1</section>
+					<section data-state="state3">State 3</section>
+					<section>No state</section>
+				</section>
+				<section>No state</section>
+
+			</div>
+
+		</div>
+
+		<script src="../dist/reveal.js"></script>
+		<script>
+
+			Reveal.initialize().then( function() {
+				console.log(Reveal);
+
+				QUnit.module( 'State' );
+
+				QUnit.test( 'Fire events when changing slide', function( assert ) {
+					assert.expect( 2 );
+					var state1 = assert.async();
+					var state2 = assert.async();
+
+					var _onState1 = function( event ) {
+						assert.ok( true, 'state1 fired' );
+						state1();
+					}
+
+					var _onState2 = function( event ) {
+						assert.ok( true, 'state2 fired' );
+						state2();
+					}
+
+					Reveal.on( 'state1', _onState1 );
+					Reveal.on( 'state2', _onState2 );
+
+					Reveal.slide( 1 );
+					Reveal.slide( 3 );
+
+					Reveal.off( 'state1', _onState1 );
+					Reveal.off( 'state2', _onState2 );
+				});
+
+				QUnit.test( 'Fire state events for vertical slides', function( assert ) {
+					assert.expect( 2 );
+					var done = assert.async( 2 );
+
+					var _onState1 = function( event ) {
+						assert.ok( true, 'state1 fired' );
+						done();
+					}
+
+					var _onState3 = function( event ) {
+						assert.ok( true, 'state3 fired' );
+						done();
+					}
+
+					Reveal.on( 'state1', _onState1 );
+					Reveal.on( 'state3', _onState3 );
+
+					Reveal.slide( 0 );
+					Reveal.slide( 4, 1 );
+					Reveal.slide( 4, 2 );
+
+					Reveal.off( 'state1', _onState1 );
+					Reveal.off( 'state3', _onState3 );
+				});
+
+				QUnit.test( 'No events if state remains unchanged', function( assert ) {
+					var stateChanges = 0;
+
+					var _onEvent = function( event ) {
+						stateChanges += 1;
+					}
+
+					Reveal.on( 'state1', _onEvent );
+
+					Reveal.slide( 0 );      // no state
+					Reveal.slide( 1 );      // state1
+					Reveal.slide( 2 );      // state1
+					Reveal.prev();          // state1
+					Reveal.next();          // state1
+					Reveal.slide( 4, 1 );   // state1
+					Reveal.slide( 0 );      // no state
+
+					Reveal.off( 'state1', _onEvent );
+
+					assert.strictEqual( stateChanges, 1, 'no event was fired when going to slide with same state' );
+				});
+
+				QUnit.test( 'Event order', function( assert ) {
+					var _onEvent = function( event ) {
+						assert.ok( Reveal.getCurrentSlide() == document.querySelector( '#slide2' ), 'correct current slide immediately after state event' );
+					}
+
+					Reveal.on( 'state1', _onEvent );
+
+					Reveal.slide( 0 );
+					Reveal.slide( 1 );
+
+					Reveal.off( 'state1', _onEvent );
+				});
+
+			} );
+		</script>
+
+	</body>
+</html>
diff --git a/inst/reveal.js-4.2.1/test/test.html b/inst/reveal.js-4.2.1/test/test.html
new file mode 100644
index 0000000..d326f01
--- /dev/null
+++ b/inst/reveal.js-4.2.1/test/test.html
@@ -0,0 +1,898 @@
+<!doctype html>
+<html lang="en">
+
+	<head>
+		<meta charset="utf-8">
+
+		<title>reveal.js - Tests</title>
+
+		<link rel="stylesheet" href="../dist/reveal.css">
+		<link rel="stylesheet" href="../node_modules/qunit/qunit/qunit.css">
+		<script src="../node_modules/qunit/qunit/qunit.js"></script>
+	</head>
+
+	<body style="overflow: auto;">
+
+		<div id="qunit"></div>
+  		<div id="qunit-fixture"></div>
+
+		<div class="reveal" style="visibility: hidden;">
+
+			<div class="slides">
+
+				<section data-visibility="hidden">
+					This should be remove by reveal.js before our tests run.
+				</section>
+
+				<section data-background-image="examples/assets/image1.png">
+					<h1>1</h1>
+					<img data-src="">
+					<video data-src=""></video>
+					<audio data-src=""></audio>
+					<aside class="notes">speaker notes 1</aside>
+				</section>
+
+				<section>
+					<section data-background="examples/assets/image2.png" data-notes="speaker notes 2">
+						<h1>2.1</h1>
+					</section>
+					<section data-background-image="data:image/jpeg;base64,/9j/4AAQSkZJRgABAQEASABIAAD/4gIcSUNDX1BST0ZJTEUAAQEAAAIMbGNtcwIQAABtbnRyUkdCIFhZWiAH3AABABkAAwApADlhY3NwQVBQTAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA9tYAAQAAAADTLWxjbXMAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAApkZXNjAAAA/">
+						<h1>2.2</h1>
+					</section>
+					<section>
+						<h1>2.3</h1>
+					</section>
+				</section>
+
+				<section id="fragment-slides">
+					<section>
+						<h1>3.1</h1>
+						<ul>
+							<li class="fragment">4.1</li>
+							<li class="fragment">4.2</li>
+							<li class="fragment">4.3</li>
+						</ul>
+					</section>
+
+					<section>
+						<h1>3.2</h1>
+						<ul>
+							<li class="fragment" data-fragment-index="0">4.1</li>
+							<li class="fragment" data-fragment-index="0">4.2</li>
+						</ul>
+						<iframe data-src="http://example.com"></iframe>
+					</section>
+
+					<section id="fragments3">
+						<h1>3.3</h1>
+						<ul>
+							<li class="fragment" data-fragment-index="1">3.3.1</li>
+							<li class="fragment" data-fragment-index="4">3.3.2</li>
+							<li class="fragment" data-fragment-index="4">3.3.3</li>
+						</ul>
+					</section>
+				</section>
+
+				<section>
+					<h1>4</h1>
+				</section>
+
+			</div>
+
+		</div>
+
+		<script src="../dist/reveal.js"></script>
+		<script>
+			window.location.hash = '';
+
+			Reveal.configure({maxScale: 1.11});
+
+			// These tests expect the DOM to contain a presentation
+			// with the following slide structure:
+			//
+			// 1
+			// 2 - Three sub-slides
+			// 3 - Three fragment elements
+			// 3 - Two fragments with same data-fragment-index
+			// 4
+			Reveal.initialize().then( function() {
+
+				// Helper methods
+				function triggerKeyboardEvent(config) {
+					document.dispatchEvent( new KeyboardEvent( 'keydown', config ) );
+				}
+
+				// ---------------------------------------------------------------
+				// DOM TESTS
+
+				QUnit.module( 'DOM' );
+
+				QUnit.test( 'Initial slides classes', function( assert ) {
+					var horizontalSlides = document.querySelectorAll( '.reveal .slides>section' )
+
+					assert.strictEqual( document.querySelectorAll( '.reveal .slides section[data-visibility="hidden"]' ).length, 0, 'no data-visibility="hidden" slides' );
+					assert.strictEqual( document.querySelectorAll( '.reveal .slides section.past' ).length, 0, 'no .past slides' );
+					assert.strictEqual( document.querySelectorAll( '.reveal .slides section.present' ).length, 1, 'one .present slide' );
+					assert.strictEqual( document.querySelectorAll( '.reveal .slides>section.future' ).length, horizontalSlides.length - 1, 'remaining horizontal slides are .future' );
+
+					assert.strictEqual( document.querySelectorAll( '.reveal .slides section.stack' ).length, 2, 'two .stacks' );
+
+					assert.ok( document.querySelectorAll( '.reveal .slides section.stack' )[0].querySelectorAll( '.future' ).length > 0, 'vertical slides are given .future' );
+				});
+
+				// ---------------------------------------------------------------
+				// API TESTS
+
+				QUnit.module( 'API' );
+
+				QUnit.test( 'Reveal.configure before initialization', function( assert ) {
+					assert.strictEqual( Reveal.getConfig().maxScale, 1.11 );
+				});
+
+				QUnit.test( 'Reveal.isReady', function( assert ) {
+					assert.strictEqual( Reveal.isReady(), true, 'returns true' );
+				});
+
+				QUnit.test( 'Reveal.isOverview', function( assert ) {
+					assert.strictEqual( Reveal.isOverview(), false, 'false by default' );
+
+					Reveal.toggleOverview();
+					assert.strictEqual( Reveal.isOverview(), true, 'true after toggling on' );
+
+					Reveal.toggleOverview();
+					assert.strictEqual( Reveal.isOverview(), false, 'false after toggling off' );
+				});
+
+				QUnit.test( 'Reveal.isPaused', function( assert ) {
+					assert.strictEqual( Reveal.isPaused(), false, 'false by default' );
+
+					Reveal.togglePause();
+					assert.strictEqual( Reveal.isPaused(), true, 'true after pausing' );
+
+					Reveal.togglePause();
+					assert.strictEqual( Reveal.isPaused(), false, 'false after resuming' );
+				});
+
+				QUnit.test( 'Reveal.isFirstSlide', function( assert ) {
+					Reveal.slide( 0, 0 );
+					assert.strictEqual( Reveal.isFirstSlide(), true, 'true after Reveal.slide( 0, 0 )' );
+
+					Reveal.slide( 1, 0 );
+					assert.strictEqual( Reveal.isFirstSlide(), false, 'false after Reveal.slide( 1, 0 )' );
+
+					Reveal.slide( 0, 0 );
+					assert.strictEqual( Reveal.isFirstSlide(), true, 'true after Reveal.slide( 0, 0 )' );
+				});
+
+				QUnit.test( 'Reveal.isFirstSlide after vertical slide', function( assert ) {
+					Reveal.slide( 1, 1 );
+					Reveal.slide( 0, 0 );
+					assert.strictEqual( Reveal.isFirstSlide(), true, 'true after Reveal.slide( 1, 1 ) and then Reveal.slide( 0, 0 )' );
+				});
+
+				QUnit.test( 'Reveal.isLastSlide', function( assert ) {
+					Reveal.slide( 0, 0 );
+					assert.strictEqual( Reveal.isLastSlide(), false, 'false after Reveal.slide( 0, 0 )' );
+
+					var lastSlideIndex = document.querySelectorAll( '.reveal .slides>section' ).length - 1;
+
+					Reveal.slide( lastSlideIndex, 0 );
+					assert.strictEqual( Reveal.isLastSlide(), true, 'true after Reveal.slide( '+ lastSlideIndex +', 0 )' );
+
+					Reveal.slide( 0, 0 );
+					assert.strictEqual( Reveal.isLastSlide(), false, 'false after Reveal.slide( 0, 0 )' );
+				});
+
+				QUnit.test( 'Reveal.isLastSlide after vertical slide', function( assert ) {
+					var lastSlideIndex = document.querySelectorAll( '.reveal .slides>section' ).length - 1;
+
+					Reveal.slide( 1, 1 );
+					Reveal.slide( lastSlideIndex );
+					assert.strictEqual( Reveal.isLastSlide(), true, 'true after Reveal.slide( 1, 1 ) and then Reveal.slide( '+ lastSlideIndex +', 0 )' );
+				});
+
+				QUnit.test( 'Reveal.getTotalSlides', function( assert ) {
+					assert.strictEqual( Reveal.getTotalSlides(), 8, 'eight slides in total' );
+				});
+
+				QUnit.test( 'Reveal.getIndices', function( assert ) {
+					var indices = Reveal.getIndices();
+
+					assert.ok( indices.hasOwnProperty( 'h' ), 'h exists' );
+					assert.ok( indices.hasOwnProperty( 'v' ), 'v exists' );
+					assert.ok( indices.hasOwnProperty( 'f' ), 'f exists' );
+
+					Reveal.slide( 1, 0 );
+					assert.strictEqual( Reveal.getIndices().h, 1, 'h 1' );
+					assert.strictEqual( Reveal.getIndices().v, 0, 'v 0' );
+
+					Reveal.slide( 1, 2 );
+					assert.strictEqual( Reveal.getIndices().h, 1, 'h 1' );
+					assert.strictEqual( Reveal.getIndices().v, 2, 'v 2' );
+
+					Reveal.slide( 0, 0 );
+					assert.strictEqual( Reveal.getIndices().h, 0, 'h 0' );
+					assert.strictEqual( Reveal.getIndices().v, 0, 'v 0' );
+				});
+
+				QUnit.test( 'Reveal.getSlide', function( assert ) {
+					assert.equal( Reveal.getSlide( 0 ), document.querySelector( '.reveal .slides>section:first-child' ), 'gets correct first slide' );
+					assert.equal( Reveal.getSlide( 1 ), document.querySelector( '.reveal .slides>section:nth-child(2)' ), 'no v index returns stack' );
+					assert.equal( Reveal.getSlide( 1, 0 ), document.querySelector( '.reveal .slides>section:nth-child(2)>section:nth-child(1)' ), 'v index 0 returns first vertical child' );
+					assert.equal( Reveal.getSlide( 1, 1 ), document.querySelector( '.reveal .slides>section:nth-child(2)>section:nth-child(2)' ), 'v index 1 returns second vertical child' );
+
+					assert.strictEqual( Reveal.getSlide( 100 ), undefined, 'undefined when out of horizontal bounds' );
+					assert.strictEqual( Reveal.getSlide( 1, 100 ), undefined, 'undefined when out of vertical bounds' );
+				});
+
+				QUnit.test( 'Reveal.getSlideBackground', function( assert ) {
+					assert.equal( Reveal.getSlideBackground( 0 ), document.querySelector( '.reveal .backgrounds>.slide-background:first-child' ), 'gets correct first background' );
+					assert.equal( Reveal.getSlideBackground( 1 ), document.querySelector( '.reveal .backgrounds>.slide-background:nth-child(2)' ), 'no v index returns stack' );
+					assert.equal( Reveal.getSlideBackground( 1, 0 ), document.querySelector( '.reveal .backgrounds>.slide-background:nth-child(2) .slide-background:nth-child(2)' ), 'v index 0 returns first vertical child' );
+					assert.equal( Reveal.getSlideBackground( 1, 1 ), document.querySelector( '.reveal .backgrounds>.slide-background:nth-child(2) .slide-background:nth-child(3)' ), 'v index 1 returns second vertical child' );
+
+					assert.strictEqual( Reveal.getSlideBackground( 100 ), undefined, 'undefined when out of horizontal bounds' );
+					assert.strictEqual( Reveal.getSlideBackground( 1, 100 ), undefined, 'undefined when out of vertical bounds' );
+				});
+
+				QUnit.test( 'Reveal.getSlideNotes', function( assert ) {
+					Reveal.slide( 0, 0 );
+					assert.ok( Reveal.getSlideNotes() === 'speaker notes 1', 'works with <aside class="notes">' );
+
+					Reveal.slide( 1, 0 );
+					assert.ok( Reveal.getSlideNotes() === 'speaker notes 2', 'works with <section data-notes="">' );
+				});
+
+				QUnit.test( 'Reveal.getPreviousSlide/getCurrentSlide', function( assert ) {
+					Reveal.slide( 0, 0 );
+					Reveal.slide( 1, 0 );
+
+					var firstSlide = document.querySelector( '.reveal .slides>section:first-child' );
+					var secondSlide = document.querySelector( '.reveal .slides>section:nth-child(2)>section' );
+
+					assert.equal( Reveal.getPreviousSlide(), firstSlide, 'previous is slide #0' );
+					assert.equal( Reveal.getCurrentSlide(), secondSlide, 'current is slide #1' );
+				});
+
+				QUnit.test( 'Reveal.getProgress', function( assert ) {
+					Reveal.slide( 0, 0 );
+					assert.strictEqual( Reveal.getProgress(), 0, 'progress is 0 on first slide' );
+
+					var lastSlideIndex = document.querySelectorAll( '.reveal .slides>section' ).length - 1;
+
+					Reveal.slide( lastSlideIndex, 0 );
+					assert.strictEqual( Reveal.getProgress(), 1, 'progress is 1 on last slide' );
+				});
+
+				QUnit.test( 'Reveal.getScale', function( assert ) {
+					assert.ok( typeof Reveal.getScale() === 'number', 'has scale' );
+				});
+
+				QUnit.test( 'Reveal.getConfig', function( assert ) {
+					assert.ok( typeof Reveal.getConfig() === 'object', 'has config' );
+				});
+
+				QUnit.test( 'Reveal.configure', function( assert ) {
+					assert.strictEqual( Reveal.getConfig().loop, false, '"loop" is false to start with' );
+
+					Reveal.configure({ loop: true });
+					assert.strictEqual( Reveal.getConfig().loop, true, '"loop" has changed to true' );
+
+					Reveal.configure({ loop: false, customTestValue: 1 });
+					assert.strictEqual( Reveal.getConfig().customTestValue, 1, 'supports custom values' );
+				});
+
+				QUnit.test( 'Reveal.availableRoutes', function( assert ) {
+					Reveal.slide( 0, 0 );
+					assert.deepEqual( Reveal.availableRoutes(), { left: false, up: false, down: false, right: true }, 'correct for first slide' );
+
+					Reveal.slide( 1, 0 );
+					assert.deepEqual( Reveal.availableRoutes(), { left: true, up: false, down: true, right: true }, 'correct for vertical slide' );
+
+					Reveal.slide( 0, 0 );
+					assert.deepEqual( Reveal.availableRoutes({ includeFragments: true }), { left: false, up: false, down: false, right: true }, 'correct with fragments included' );
+				});
+
+				QUnit.test( 'Reveal.next', function( assert ) {
+					Reveal.slide( 0, 0 );
+
+					// Step through vertical child slides
+					Reveal.next();
+					assert.deepEqual( Reveal.getIndices(), { h: 1, v: 0, f: undefined } );
+
+					Reveal.next();
+					assert.deepEqual( Reveal.getIndices(), { h: 1, v: 1, f: undefined } );
+
+					Reveal.next();
+					assert.deepEqual( Reveal.getIndices(), { h: 1, v: 2, f: undefined } );
+
+					// Step through fragments
+					Reveal.next();
+					assert.deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: -1 } );
+
+					Reveal.next();
+					assert.deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: 0 } );
+
+					Reveal.next();
+					assert.deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: 1 } );
+
+					Reveal.next();
+					assert.deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: 2 } );
+				});
+
+				QUnit.test( 'Reveal.next at end', function( assert ) {
+					Reveal.slide( 3 );
+
+					// We're at the end, this should have no effect
+					Reveal.next();
+					assert.deepEqual( Reveal.getIndices(), { h: 3, v: 0, f: undefined } );
+
+					Reveal.next();
+					assert.deepEqual( Reveal.getIndices(), { h: 3, v: 0, f: undefined } );
+				});
+
+
+				// ---------------------------------------------------------------
+				// URL TESTS
+
+				QUnit.module( 'URL' );
+
+				QUnit.test( 'Write (fragmentInURL: false)', function( assert ) {
+					Reveal.configure({ hash: true, fragmentInURL: false });
+
+					Reveal.slide( 2, 0 );
+					assert.strictEqual( window.location.hash, '#/2' );
+
+					Reveal.slide( 2, 1 );
+					assert.strictEqual( window.location.hash, '#/2/1' );
+
+					Reveal.slide( 2, 0, 1 );
+					assert.strictEqual( window.location.hash, '#/2' );
+
+					Reveal.slide( 2, 2, 0 );
+					assert.strictEqual( window.location.hash, '#/fragments3' );
+
+					Reveal.slide( 2, 2, 1 );
+					assert.strictEqual( window.location.hash, '#/fragments3' );
+				});
+
+				QUnit.test( 'Write (fragmentInURL: true)', function( assert ) {
+					Reveal.configure({ hash: true, fragmentInURL: true });
+
+					Reveal.slide( 2, 0, -1 );
+					assert.strictEqual( window.location.hash, '#/2' );
+
+					Reveal.slide( 2, 1, -1 );
+					assert.strictEqual( window.location.hash, '#/2/1' );
+
+					Reveal.slide( 2, 0, 1 );
+					assert.strictEqual( window.location.hash, '#/2/0/1' );
+
+					Reveal.slide( 2, 2, -1 );
+					assert.strictEqual( window.location.hash, '#/fragments3' );
+
+					Reveal.slide( 2, 2, 1 );
+					assert.strictEqual( window.location.hash, '#/fragments3/1' );
+				});
+
+				QUnit.test( 'Read', async function( assert ) {
+					Reveal.configure({ hash: true, fragmentInURL: true });
+
+					let test = function( hash, indices ) {
+						return new Promise( resolve => {
+							window.onhashchange = () => {
+								assert.deepEqual( Reveal.getIndices(), indices );
+								resolve();
+							};
+							window.location.hash = hash;
+						} );
+					}
+
+					await test( '#/0', { h: 0, v: 0, f: undefined } ); // horizontal
+					await test( '#/1/1', { h: 1, v: 1, f: undefined } ); // vertical
+					await test( '#/0/', { h: 0, v: 0, f: undefined } ); // trailing /
+					await test( '#/1/1/', { h: 1, v: 1, f: undefined } ); // trailing /
+					await test( '#/2/0/1', { h: 2, v: 0, f: 1 } ); // fragment
+				});
+
+				// ---------------------------------------------------------------
+				// KEYBOARD TESTS
+
+				QUnit.module( 'Keyboard' );
+
+				QUnit.test( 'Add key bindings', function( assert ) {
+					var done = assert.async( 1 );
+
+					Reveal.addKeyBinding({keyCode: 88, key: 'X', description: 'X-SHORTCUT-X'}, function() {
+						assert.ok( true, 'callback triggered' );
+						done();
+					} );
+
+					Reveal.toggleHelp( true );
+					assert.ok( /X\-SHORTCUT\-X/.test( document.body.innerHTML ), 'binding is added to help overlay' );
+					Reveal.toggleHelp( false );
+
+					triggerKeyboardEvent({ keyCode: 88 });
+
+					Reveal.removeKeyBinding( 88 );
+
+					// should do nothing
+					triggerKeyboardEvent({ keyCode: 88 });
+				});
+
+				QUnit.test( 'Navigation bindings', function( assert ) {
+					Reveal.slide( 0 );
+
+					// right arrow
+					triggerKeyboardEvent({ keyCode: 39 });
+					assert.strictEqual( Reveal.getIndices().h, 1 );
+
+					// down arrow + shift
+					triggerKeyboardEvent({ keyCode: 40, shiftKey: true });
+					assert.strictEqual( Reveal.getIndices().v, 2, 'shift + down arrow goes to last vertical slide' );
+
+					// up arrow
+					triggerKeyboardEvent({ keyCode: 38 });
+					assert.strictEqual( Reveal.getIndices().v, 1 );
+
+					// right arrow + shift
+					triggerKeyboardEvent({ keyCode: 39, shiftKey: true });
+					assert.ok( Reveal.isLastSlide(), 'shift + right arrow goes to last horizontal slide' );
+
+
+					// right arrow on slide with fragments
+					Reveal.slide( 2, 0, -1 );
+					triggerKeyboardEvent({ keyCode: 39 });
+					assert.deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: 0 }, 'right arrow shows fragment' );
+
+					triggerKeyboardEvent({ keyCode: 39, altKey: true });
+					assert.strictEqual( Reveal.getIndices().h, 3, 'right arrow skips fragments when alt key is pressed' );
+				});
+
+				// ---------------------------------------------------------------
+				// FRAGMENT TESTS
+
+				QUnit.module( 'Fragments' );
+
+				QUnit.test( 'Sliding to fragments', function( assert ) {
+					Reveal.slide( 2, 0, -1 );
+					assert.deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: -1 }, 'Reveal.slide( 2, 0, -1 )' );
+
+					Reveal.slide( 2, 0, 0 );
+					assert.deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: 0 }, 'Reveal.slide( 2, 0, 0 )' );
+
+					Reveal.slide( 2, 0, 2 );
+					assert.deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: 2 }, 'Reveal.slide( 2, 0, 2 )' );
+
+					Reveal.slide( 2, 0, 1 );
+					assert.deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: 1 }, 'Reveal.slide( 2, 0, 1 )' );
+				});
+
+				QUnit.test( 'data-fragment is set on slide <section>', function( assert ) {
+					Reveal.slide( 2, 0, -1 );
+					assert.deepEqual( Reveal.getCurrentSlide().getAttribute( 'data-fragment' ), '-1' );
+
+					Reveal.slide( 2, 0, 2 );
+					assert.deepEqual( Reveal.getCurrentSlide().getAttribute( 'data-fragment' ), '2' );
+
+					Reveal.slide( 2, 0, 0 );
+					assert.deepEqual( Reveal.getCurrentSlide().getAttribute( 'data-fragment' ), '0' );
+
+					var fragmentSlide = Reveal.getCurrentSlide();
+
+					Reveal.slide( 3, 0 );
+					assert.deepEqual( fragmentSlide.getAttribute( 'data-fragment' ), '0', 'data-fragment persists when jumping to another slide' );
+				});
+
+				QUnit.test( 'Hiding all fragments', function( assert ) {
+					var fragmentSlide = document.querySelector( '#fragment-slides>section:nth-child(1)' );
+
+					Reveal.slide( 2, 0, 0 );
+					assert.strictEqual( fragmentSlide.querySelectorAll( '.fragment.visible' ).length, 1, 'one fragment visible when index is 0' );
+
+					Reveal.slide( 2, 0, -1 );
+					assert.strictEqual( fragmentSlide.querySelectorAll( '.fragment.visible' ).length, 0, 'no fragments visible when index is -1' );
+				});
+
+				QUnit.test( 'Current fragment', function( assert ) {
+					var fragmentSlide = document.querySelector( '#fragment-slides>section:nth-child(1)' );
+					var lastFragmentIndex = [].slice.call( fragmentSlide.querySelectorAll( '.fragment' ) ).pop().getAttribute( 'data-fragment-index' );
+
+					Reveal.slide( 2, 0 );
+					assert.strictEqual( fragmentSlide.querySelectorAll( '.fragment.current-fragment' ).length, 0, 'no current fragment at index -1' );
+
+					Reveal.slide( 2, 0, 0 );
+					assert.strictEqual( fragmentSlide.querySelectorAll( '.fragment.current-fragment' ).length, 1, 'one current fragment at index 0' );
+
+					Reveal.slide( 1, 0, 0 );
+					assert.strictEqual( fragmentSlide.querySelectorAll( '.fragment.current-fragment' ).length, 0, 'no current fragment when navigating to previous slide' );
+
+					Reveal.slide( 3, 0, 0 );
+					assert.strictEqual( fragmentSlide.querySelectorAll( '.fragment.current-fragment' ).length, 0, 'no current fragment when navigating to next slide' );
+
+					Reveal.slide( 2, 1, -1 );
+					Reveal.prev();
+					assert.strictEqual( fragmentSlide.querySelector( '.fragment.current-fragment' ).getAttribute( 'data-fragment-index' ), lastFragmentIndex, 'last fragment is current fragment when returning from future slide' );
+				});
+
+				QUnit.test( 'Stepping through fragments', function( assert ) {
+					Reveal.slide( 2, 0, -1 );
+
+					// forwards:
+
+					Reveal.next();
+					assert.deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: 0 }, 'next() goes to next fragment' );
+
+					Reveal.right();
+					assert.deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: 1 }, 'right() goes to next fragment' );
+
+					Reveal.down();
+					assert.deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: 2 }, 'down() goes to next fragment' );
+
+					Reveal.down(); // moves to f #3
+
+					// backwards:
+
+					Reveal.prev();
+					assert.deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: 2 }, 'prev() goes to prev fragment' );
+
+					Reveal.left();
+					assert.deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: 1 }, 'left() goes to prev fragment' );
+
+					Reveal.up();
+					assert.deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: 0 }, 'up() goes to prev fragment' );
+				});
+
+				QUnit.test( 'Stepping past fragments', function( assert ) {
+					var fragmentSlide = document.querySelector( '#fragment-slides>section:nth-child(1)' );
+
+					Reveal.slide( 0, 0, 0 );
+					assert.equal( fragmentSlide.querySelectorAll( '.fragment.visible' ).length, 0, 'no fragments visible when on previous slide' );
+
+					Reveal.slide( 3, 0, 0 );
+					assert.equal( fragmentSlide.querySelectorAll( '.fragment.visible' ).length, 3, 'all fragments visible when on future slide' );
+				});
+
+				QUnit.test( 'Fragment indices', function( assert ) {
+					var fragmentSlide = document.querySelector( '#fragment-slides>section:nth-child(2)' );
+
+					Reveal.slide( 3, 0, 0 );
+					assert.equal( fragmentSlide.querySelectorAll( '.fragment.visible' ).length, 2, 'both fragments of same index are shown' );
+
+					// This slide has three fragments, first one is index 0, second and third have index 1
+					Reveal.slide( 2, 2, 0 );
+					assert.equal( Reveal.getIndices().f, 0, 'returns correct index for first fragment' );
+
+					Reveal.slide( 2, 2, 1 );
+					assert.equal( Reveal.getIndices().f, 1, 'returns correct index for two fragments with same index' );
+				});
+
+				QUnit.test( 'Index generation', function( assert ) {
+					var fragmentSlide = document.querySelector( '#fragment-slides>section:nth-child(1)' );
+
+					// These have no indices defined to start with
+					assert.equal( fragmentSlide.querySelectorAll( '.fragment' )[0].getAttribute( 'data-fragment-index' ), '0' );
+					assert.equal( fragmentSlide.querySelectorAll( '.fragment' )[1].getAttribute( 'data-fragment-index' ), '1' );
+					assert.equal( fragmentSlide.querySelectorAll( '.fragment' )[2].getAttribute( 'data-fragment-index' ), '2' );
+				});
+
+				QUnit.test( 'Index normalization', function( assert ) {
+					var fragmentSlide = document.querySelector( '#fragment-slides>section:nth-child(3)' );
+
+					// These start out as 1-4-4 and should normalize to 0-1-1
+					assert.equal( fragmentSlide.querySelectorAll( '.fragment' )[0].getAttribute( 'data-fragment-index' ), '0' );
+					assert.equal( fragmentSlide.querySelectorAll( '.fragment' )[1].getAttribute( 'data-fragment-index' ), '1' );
+					assert.equal( fragmentSlide.querySelectorAll( '.fragment' )[2].getAttribute( 'data-fragment-index' ), '1' );
+				});
+
+				QUnit.test( 'fragmentshown event', function( assert ) {
+					assert.expect( 2 );
+					var done = assert.async( 2 );
+
+					var _onEvent = function( event ) {
+						assert.ok( true, 'event fired' );
+						done();
+					}
+
+					Reveal.on( 'fragmentshown', _onEvent );
+
+					Reveal.slide( 2, 0 );
+					Reveal.slide( 2, 0 ); // should do nothing
+					Reveal.slide( 2, 0, 0 ); // should do nothing
+					Reveal.next();
+					Reveal.next();
+					Reveal.prev(); // shouldn't fire fragmentshown
+
+					Reveal.off( 'fragmentshown', _onEvent );
+				});
+
+				QUnit.test( 'fragmenthidden event', function( assert ) {
+					assert.expect( 2 );
+					var done = assert.async( 2 );
+
+					var _onEvent = function( event ) {
+						assert.ok( true, 'event fired' );
+						done();
+					}
+
+					Reveal.on( 'fragmenthidden', _onEvent );
+
+					Reveal.slide( 2, 0, 2 );
+					Reveal.slide( 2, 0, 2 ); // should do nothing
+					Reveal.prev();
+					Reveal.prev();
+					Reveal.next(); // shouldn't fire fragmenthidden
+
+					Reveal.off( 'fragmenthidden', _onEvent );
+				});
+
+
+				// ---------------------------------------------------------------
+				// AUTO-SLIDE TESTS
+
+				QUnit.module( 'Auto Sliding' );
+
+				QUnit.test( 'Reveal.isAutoSliding', function( assert ) {
+					assert.strictEqual( Reveal.isAutoSliding(), false, 'false by default' );
+
+					Reveal.configure({ autoSlide: 10000 });
+					assert.strictEqual( Reveal.isAutoSliding(), true, 'true after starting' );
+
+					Reveal.configure({ autoSlide: 0 });
+					assert.strictEqual( Reveal.isAutoSliding(), false, 'false after setting to 0' );
+				});
+
+				QUnit.test( 'Reveal.toggleAutoSlide', function( assert ) {
+					Reveal.configure({ autoSlide: 10000 });
+
+					Reveal.toggleAutoSlide();
+					assert.strictEqual( Reveal.isAutoSliding(), false, 'false after first toggle' );
+					Reveal.toggleAutoSlide();
+					assert.strictEqual( Reveal.isAutoSliding(), true, 'true after second toggle' );
+
+					Reveal.configure({ autoSlide: 0 });
+				});
+
+				QUnit.test( 'autoslidepaused', function( assert ) {
+					assert.expect( 1 );
+					var done = assert.async();
+
+					var _onEvent = function( event ) {
+						assert.ok( true, 'event fired' );
+						done();
+					}
+
+					Reveal.on( 'autoslidepaused', _onEvent );
+					Reveal.configure({ autoSlide: 10000 });
+					Reveal.toggleAutoSlide();
+
+					// cleanup
+					Reveal.configure({ autoSlide: 0 });
+					Reveal.off( 'autoslidepaused', _onEvent );
+				});
+
+				QUnit.test( 'autoslideresumed', function( assert ) {
+					assert.expect( 1 );
+					var done = assert.async();
+
+					var _onEvent = function( event ) {
+						assert.ok( true, 'event fired' );
+						done();
+					}
+
+					Reveal.on( 'autoslideresumed', _onEvent );
+					Reveal.configure({ autoSlide: 10000 });
+					Reveal.toggleAutoSlide();
+					Reveal.toggleAutoSlide();
+
+					// cleanup
+					Reveal.configure({ autoSlide: 0 });
+					Reveal.off( 'autoslideresumed', _onEvent );
+				});
+
+
+				// ---------------------------------------------------------------
+				// CONFIGURATION VALUES
+
+				QUnit.module( 'Configuration' );
+
+				QUnit.test( 'Controls', function( assert ) {
+					var controlsElement = document.querySelector( '.reveal>.controls' );
+
+					Reveal.configure({ controls: false });
+					assert.equal( controlsElement.style.display, 'none', 'controls are hidden' );
+
+					Reveal.configure({ controls: true });
+					assert.equal( controlsElement.style.display, 'block', 'controls are visible' );
+				});
+
+				QUnit.test( 'Progress', function( assert ) {
+					var progressElement = document.querySelector( '.reveal>.progress' );
+
+					Reveal.configure({ progress: false });
+					assert.equal( progressElement.style.display, 'none', 'progress are hidden' );
+
+					Reveal.configure({ progress: true });
+					assert.equal( progressElement.style.display, 'block', 'progress are visible' );
+				});
+
+				QUnit.test( 'Loop', function( assert ) {
+					Reveal.configure({ loop: true });
+
+					Reveal.slide( 0, 0 );
+
+					Reveal.left();
+					assert.notEqual( Reveal.getIndices().h, 0, 'looped from start to end' );
+
+					Reveal.right();
+					assert.equal( Reveal.getIndices().h, 0, 'looped from end to start' );
+
+					Reveal.configure({ navigationMode: 'linear' });
+					Reveal.slide( 0, 0 );
+
+					Reveal.prev();
+					assert.notEqual( Reveal.getIndices().h, 0, 'looped from start to end in linear mode' );
+
+					Reveal.next();
+					assert.equal( Reveal.getIndices().h, 0, 'looped from end to start in linear mode' );
+
+					Reveal.configure({ loop: false, navigationMode: 'default' });
+				});
+
+
+				// ---------------------------------------------------------------
+				// LAZY-LOADING TESTS
+
+				QUnit.module( 'Lazy-Loading' );
+
+				QUnit.test( 'img with data-src', function( assert ) {
+					assert.strictEqual( document.querySelectorAll( '.reveal section img[src]' ).length, 1, 'Image source has been set' );
+				});
+
+				QUnit.test( 'video with data-src', function( assert ) {
+					assert.strictEqual( document.querySelectorAll( '.reveal section video[src]' ).length, 1, 'Video source has been set' );
+				});
+
+				QUnit.test( 'audio with data-src', function( assert ) {
+					assert.strictEqual( document.querySelectorAll( '.reveal section audio[src]' ).length, 1, 'Audio source has been set' );
+				});
+
+				QUnit.test( 'iframe with data-src', function( assert ) {
+					Reveal.slide( 0, 0 );
+					assert.strictEqual( document.querySelectorAll( '.reveal section iframe[src]' ).length, 0, 'Iframe source is not set' );
+					Reveal.slide( 2, 1 );
+					assert.strictEqual( document.querySelectorAll( '.reveal section iframe[src]' ).length, 1, 'Iframe source is set' );
+					Reveal.slide( 2, 2 );
+					assert.strictEqual( document.querySelectorAll( '.reveal section iframe[src]' ).length, 0, 'Iframe source is not set' );
+				});
+
+				QUnit.test( 'background images', function( assert ) {
+					var imageSource1 = Reveal.getSlide( 0 ).getAttribute( 'data-background-image' );
+					var imageSource2 = Reveal.getSlide( 1, 0 ).getAttribute( 'data-background' );
+					var imageSource3 = Reveal.getSlide( 1, 1 ).getAttribute( 'data-background-image' );
+
+					// check that the images are applied to the background elements
+					assert.ok( Reveal.getSlideBackground( 0 ).querySelector( '.slide-background-content' ).style.backgroundImage.indexOf( imageSource1 ) !== -1, 'data-background-image worked' );
+					assert.ok( Reveal.getSlideBackground( 1, 0 ).querySelector( '.slide-background-content' ).style.backgroundImage.indexOf( imageSource2 ) !== -1, 'data-background worked' );
+					assert.ok( Reveal.getSlideBackground( 1, 1 ).querySelector( '.slide-background-content' ).style.backgroundImage.indexOf( imageSource3 ) !== -1, 'data-background worked' );
+				});
+
+
+				// ---------------------------------------------------------------
+				// EVENT TESTS
+
+				QUnit.module( 'Events' );
+
+				QUnit.test( 'beforeslidechange', function( assert ) {
+					var done = assert.async( 2 );
+
+					var normalEvent = function( event ) {
+						assert.ok( true, 'event fired' );
+						done();
+					}
+					var blockingEvent = function( event ) {
+						event.preventDefault();
+						assert.ok( true, 'event fired' );
+						done();
+					}
+
+					Reveal.on( 'beforeslidechange', normalEvent );
+					Reveal.slide( 2, 0 );
+					Reveal.off( 'beforeslidechange', normalEvent );
+
+					Reveal.on( 'beforeslidechange', blockingEvent );
+					Reveal.slide( 3, 0 );
+					Reveal.off( 'beforeslidechange', blockingEvent );
+
+					assert.strictEqual( Reveal.getIndices().h, 2, 'preventing "beforeslidechange" blocks navigation ' );
+
+				});
+
+				QUnit.test( 'slidechanged', function( assert ) {
+					assert.expect( 3 );
+					var done = assert.async( 3 );
+
+					var _onEvent = function( event ) {
+						assert.ok( true, 'event fired' );
+						done();
+					}
+
+					Reveal.on( 'slidechanged', _onEvent );
+
+					Reveal.slide( 1, 0 ); // should trigger
+					Reveal.slide( 1, 0 ); // should do nothing
+					Reveal.next(); // should trigger
+					Reveal.slide( 3, 0 ); // should trigger
+					Reveal.next(); // should do nothing
+
+					Reveal.off( 'slidechanged', _onEvent );
+
+				});
+
+				/* Fails intermittently...
+				QUnit.test( 'slidetransitionend', function( assert ) {
+					assert.expect( 2 );
+					let done = assert.async( 2 );
+					let time = Date.now();
+
+					let horizontalCallback = event => {
+						assert.ok( Date.now() - time > 200, 'horizontal event fired' );
+						done();
+
+						let verticalCallback = event => {
+							assert.ok( true, 'vertical event fired' );
+							done();
+							Reveal.off( 'slidetransitionend', verticalCallback );
+						}
+
+						Reveal.off( 'slidetransitionend', horizontalCallback );
+						Reveal.on( 'slidetransitionend', verticalCallback );
+						Reveal.slide( 1, 1 );
+					}
+
+					Reveal.slide( 0, 0 );
+					Reveal.on( 'slidetransitionend', horizontalCallback );
+					Reveal.slide( 1, 0 );
+
+				});
+				*/
+
+				QUnit.test( 'paused', function( assert ) {
+					assert.expect( 1 );
+					var done = assert.async();
+
+					var _onEvent = function( event ) {
+						assert.ok( true, 'event fired' );
+						done();
+					}
+
+					Reveal.on( 'paused', _onEvent );
+
+					Reveal.togglePause();
+					Reveal.togglePause();
+
+					Reveal.off( 'paused', _onEvent );
+				});
+
+				QUnit.test( 'resumed', function( assert ) {
+					assert.expect( 1 );
+					var done = assert.async();
+
+					var _onEvent = function( event ) {
+						assert.ok( true, 'event fired' );
+						done();
+					}
+
+					Reveal.on( 'resumed', _onEvent );
+
+					Reveal.togglePause();
+					Reveal.togglePause();
+
+					Reveal.off( 'resumed', _onEvent );
+				});
+
+			} );
+		</script>
+
+	</body>
+</html>