- fixed media notification not shown after recreating the player
- media player is initialized to streaming/local based on the global setting of StreamOverDownload
- replaced a couple Thread with Coroutine
- no longer toasting "No vorbis identification header found"
- class ServiceStatusHandler (former MediaController) in AudioPlayer screen appears redundant, disabled now.
- added observation of periodic feed updates
- check for SDK_INT >= 26 is removed (min SDK is 26)