Add cache busting to CSS and JS

Author: anatoliykmetyuk

_includes/footer.html

@@ -58,7 +58,7 @@
     <script src="{{ site.baseurl }}/resources/js/vendor/jekyll.search.min.js" type="text/javascript"></script>
 
     <!-- Custom javascript -->
-    <script src="{{ site.baseurl }}/resources/js/functions.js" type="text/javascript"></script>
+    <script src="{{ site.baseurl }}/resources/js/functions.js?v={{ site.time | date: '%Y%m%d%H%M%S' }}" type="text/javascript"></script>
     <script defer data-domain="scala-lang.org" src="https://plausible.scala-lang.org/js/script.js"></script>
   </body>
 </html>

_includes/headertop.html

@@ -46,7 +46,7 @@
     {% else %}
     <link rel="stylesheet" href="{{ site.baseurl }}/resources/css/highlightjs.css" type="text/css" />
     {% endif %}
-    <link rel="stylesheet" href="{{ site.baseurl }}/resources/css/style.css" type="text/css" />
+    <link rel="stylesheet" href="{{ site.baseurl }}/resources/css/style.css?v={{ site.time | date: '%Y%m%d%H%M%S' }}" type="text/css" />
     <link rel="stylesheet" href="{{ site.baseurl }}/resources/css/vendor/codemirror.css" type="text/css" />
     <link rel="stylesheet" href="{{ site.baseurl }}/resources/css/vendor/monokai.css" type="text/css" />
     <link rel="stylesheet" href="{{ site.baseurl }}/resources/css/monospace.css" type="text/css" />
@@ -60,4 +60,4 @@
 
     {% if page.canonical %}
     <link rel="canonical" href="{{ page.canonical | absolute_url }}" />
-    {% endif %} 
+    {% endif %}