6.0.0

• complete overhaul of database and routines, ditched the iron-age celebrity SQLite and entrusted the modern object-based Realm
• export/import DB is supported for the Realm DB with file extension .realm
• DB from Podcini version 5 and below can not be imported, see migrationTo6.md file on github for instructions
• deleting feeds is performed promptly
• components rely more on objects for communication, unnecessary DB access is reduced
• subscriptions sorting is more explicit
• in Subscriptions view, click on cover image of a feed opens the FeedInfo view (not FeedEpisodes view)
• in Subscriptions and episodes list views, corrected the issue of wrong images of episodes being shown when scrolling
• the Counter and its seetings are removed
• flow event additions and improvements
• receiving flow events are strictly tied to life cycles of the components
• NavDrawer no longer gets updated in the background but only upon open
• player control UI is more efficient
• PlaybackController is further enhanced for multiple access
• non-essential instantiations of PlaybackController are stripped
• AudioPlayer view is hidden when there is no media set to play
• playback routines are extensively tuned and cleaned, less layered
• in any episode list views, swipe with NO_ACTION defined pops up the swipe config dialog
• episodes marked played will be removed from all queues
• in EpisodeInfo view, "mark played/unplayed", "add to/remove from queue", and "favoraite/unfovorite" are at the action bar
• decade-old joanzapata iconify is replaced with mikepenz iconics
• removed the need for support libraries and the need for the jetifier
• Java tools checkstyle and spotbus are removed
• the clumsy FeedDrawerItem class was removed and related compponents are based purely on feed objects
• FeedInfo view has button showing number of episodes to open the FeedEpisodes view
• on action bar of FeedEpisodes view there is a direct access to Queue
• tidied up the header of FeedEpisodes view
• media size is shown on episode info view
• net-fetching of media size for not-downloaded media is removed for episode list views
• there is a setting to disable/enable auto backup OPML files to Google
• all RxJava code was replaced with coroutines, RxJava dependency is kept only for using fyyd search
• PlaybackPreferences using SharePreferences was removed and related info is handled by the DB as CurrentState
• InTheatre object is now the center reference for all currently playing stuff including the current play queue
• 5 queues are provided by default: Default queue, and Queues 1-4
  • all queue operations are on the curQueue, which can be set in all episodes list views
  • on app startup, the most recently updated queue is set to curQueue
• extensive adjustments project class structures
• code is now built with Kotlin 2.0.0