Fix broken tests

package-lock.json

@@ -1009,14 +1009,14 @@
       "dev": true
     },
     "backbone.overview": {
-      "version": "git+https://github.com/jcbrand/Backbone.Overview.git#2c37461bfa8d9e8bcf8284033d3242c57eafb52d",
+      "version": "git+https://github.com/jcbrand/Backbone.Overview.git#16239768880044f402edbdb1843220c44204cf15",
       "dev": true,
       "requires": {
         "backbone": "1.3.3"
       }
     },
     "backbone.vdomview": {
-      "version": "git+https://github.com/jcbrand/backbone.vdomview.git#f781547e9a5ce401ac4334930d74b791168114ef",
+      "version": "git+https://github.com/jcbrand/backbone.vdomview.git#e685de2ef5a810a87efe886b35c99ce0b3ab8f82",
       "dev": true,
       "requires": {
         "backbone": "1.3.3"

src/utils.js

@@ -605,5 +605,11 @@
         return el.offsetWidth > 0 || el.offsetHeight > 0 || el.getClientRects().length > 0;
     };
 
+    u.triggerEvent = function (el, name, type="Event", bubbles=true, cancelable=true) {
+        const evt = document.createEvent(type);
+        evt.initEvent(name, bubbles, cancelable);
+        el.dispatchEvent(evt);
+    };
+
     return u;
 }));