added analytics tag

index.html

@@ -615,16 +615,16 @@ <h3 id="Other comments">
 
     </div>
 
-    <!-- <script>
-      (function (i, s, o, g, r, a, m) {
-        i['GoogleAnalyticsObject'] = r; i[r] = i[r] || function () {
-          (i[r].q = i[r].q || []).push(arguments)
-        }, i[r].l = 1 * new Date(); a = s.createElement(o),
-          m = s.getElementsByTagName(o)[0]; a.async = 1; a.src = g; m.parentNode.insertBefore(a, m)
-      })(window, document, 'script', '//www.google-analytics.com/analytics.js', 'ga');
-      ga('create', 'UA-139981676-1', 'auto');
-      ga('send', 'pageview');
-    </script> -->
+
+    <!-- Google tag (gtag.js) -->
+<script async src="https://www.googletagmanager.com/gtag/js?id=G-BVMESHE6ZC"></script>
+<script>
+  window.dataLayer = window.dataLayer || [];
+  function gtag(){dataLayer.push(arguments);}
+  gtag('js', new Date());
+
+  gtag('config', 'G-BVMESHE6ZC');
+</script>
 
     <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/8.4/highlight.min.js"></script>
     <script>hljs.initHighlightingOnLoad();</script>