message: dispatch supports async dispatching on its own
diff: @@ -1702,10 +1702,7 @@ export default React.createClass({
  },
  _dispatchTimelineResize() {
  - // prevent dispatch from within dispatch error
  - setTimeout(() => {
  - dis.dispatch({ action: 'timeline_resize' }, true);
  - }, 0);
  + dis.dispatch({ action: 'timeline_resize' });
  },
  onRoomCreated: function(roomId) {
  