 Version 6.15.0

* added a combo Epiosdes fragment with easy access to various filters
	* merged AllEpisodes, History and Download into Episodes
	* other easy accesses include: New, Planned (for Soon and Later), Repeats (for Again and Forever), Liked (for Good and Super)
	* New episodes can be cleared via the manu
* drawer items customization is disabled in Settings
* drawer includes 5 most recent feeds
* rearranged routines in ImportExportPreferences
* importing OPML file is done within the activity, no longer starts OpmlImportActivity
* removed OpmlImportActivity
* getting shared youtube media has a new interface to select feed
* cleaned up SwipeActions, removed the need for filter
* more Compose migrations
* media3 update to 1.5.0
