Version 6.4.0 brings several changes:

* PlaybackService is now a MediaLibraryService and also takes over many functionalities from PlaybackController
* PlaybackController is renamed to ServiceStatusHandler and is stripped to bare bones
* enabled Android Auto UI, currently playing episode and episodes in the active queue are shown in the Auto UI
* added code to handle case where keycode=-1 and keyEvent!=null, attempting to resolve the occassional issue of random start playing