moar slides, disable localhost pwa cache

slides/100-javascript-new.html

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+<title>What's New with JavaScript?</title>
+<h1>What's New with JavaScript?</h1>
+<div class="center">
+    <div class="card appear" repeat="whatsnew">
+        <span>{{item}}</span>
+    </div>
+</div>
+<script>
+    this.whatsnew = [
+        "Scope and Variables",
+        "Powerful Strings",
+        "The Spread Operator",
+        "Destructuring",
+        "Parameters",
+        "Classes",
+        "Modules",
+        "...and a lot more!"
+    ];
+</script>
+<next-slide>110-variables</next-slide>