restore hash function in js

CHANGELOG.md

@@ -6,6 +6,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+* Restored hash changing function in `main.js`
+
 ## 0.20
 
 ### Added

senpy/static/js/main.js

@@ -203,8 +203,8 @@ $(document).ready(function() {
         draw_datasets();
     }
 
-    // $(window).on('hashchange', hashchanged);
+    $(window).on('hashchange', hashchanged);
-    // hashchanged();
+    hashchanged();
     $('.tooltip-form').tooltip();
 
     $('.nav-pills a').on('shown.bs.tab', function (e) {