This is a major new release 5.0. Much of the playback queuing was rewritten to make the player much more stable. This solved many of the smaller problems existed om the players for years, mostly related to shuffling and changes in the file system during playback. PLEASE let me know if you see any anomalies with playback, as this is a new system and things may not work as expected so I can fix them ASAP.
Other things:
New: Two widgets (3x1 and 5x1) with back button
New: Sort button moved from settings to top menu
Fixed: No pause on phone call
A lot of other smaller fixes for special use cases