1. Fix starting chrome media session.
2. If now-playing timer is 2 seconds or more past duration, refresh status.
3. Refresh player status when app gets focus on mobile.
4. If library_id is set, then pass down to all subsequent list commands.
5. Fix update detection when rename favourite.
6. If list is cancellable, reset token after call.
7. Improve queue performance with many (e.g. 500) items.