Fix MS Edge support

source/js/components/ViewProvider.vue

@@ -32,7 +32,7 @@ export default {
       this.$data.views[viewId] = show;
     },
     setViews(updates) {
-      this.$data.views = {...this.data.views, updates};
+      this.$data.views = Object.assign({}, this.data.views, updates);
     },
     toggleView(viewId) {
       Object.keys(this.$data.views).forEach(key => {