Revert "Revert "Fix aframevr#1732: Don't bubble 'componentchanged' event" (aframevr#1758)" (aframevr#1768)

This reverts commit c131fc8.

Author: ngokevin

src/core/component.js

@@ -210,7 +210,7 @@ Component.prototype = {
       name: this.name,
       newData: this.getData(),
       oldData: oldData
-    });
+    }, false);
   },
 
   /**