Merge pull request #1024 from friday/event-bubble-detail

Event "detail" is lost in the synthetic event bubble/proxy

src/js/listeners.js

@@ -414,7 +414,7 @@ class Listeners {
             'keyup',
             'keydown',
         ]).join(' '), event => {
-            let detail = {};
+            let {detail = {}} = event;
 
             // Get error details from media
             if (event.type === 'error') {