mild cleanup

Author: cpparts

js/models/event_handler.js

@@ -48,7 +48,7 @@ export default class EventHandler {
 
   /**
    * Updates the view center rotation in the model.
-   * WARNING: This method don't call model.save_changes()!
+   * WARNING: This method doesn't call model.save_changes()!
    */
   updateRotation() {
     if (!this.isLastDiv()) return;

js/widget.js

@@ -39,7 +39,7 @@ function initAladinLite(model, el) {
   });
   const wcs = { ...aladin.getViewWCS() };
   model.set("_wcs", wcs);
-  const rotation = aladin.getRotation();
+  const rotation = { ...aladin.getRotation() };
   model.set("_rotation", rotation);
 
   model.set("_is_loaded", true);