Replace 3.1.0 -> 4.2.0

Author: artemp

site/main.js

@@ -8,7 +8,7 @@
       var self = this;
       window.addEventListener('hashchange', function () {self.fetchFromHash();});
     };
-    UI.versions = ['3.1.0', '3.0.22', '3.0.20', '3.0.6', '3.0.3', '3.0.0', '2.3.0', '2.2.0', '2.1.0', '2.0.0'];
+    UI.versions = ['4.2.0', '3.0.22', '3.0.20', '3.0.6', '3.0.3', '3.0.0', '2.3.0', '2.2.0', '2.1.0', '2.0.0'];
     UI.prototype = {
 
         isArray: Array.isArray || function (obj) {