Version 28.4

• fix broken Spotify after libspotify sunset
• remove antlr3 dependency, use bison/flex instead
• improve search by supporting diacritics and Unicode case folding
• add support for new output: Roku/Soundbridge RCP
• switch to MkDocs for documentation
• smart playlists fixups and new "this week" param
• fix 'add next' when in queue shuffle mode
• web UI improvements:
  • migration to Vue 3 and Vite
  • honor "radio_playlists" config setting
  • display of search results for composers and playlists
  • add album / track count to genre and composer pages
  • fix incorrect sorting of album/artist searches
  • minor UI fixes
• fix for Spotify config option album_override
• improved Spotify scan performance
• generic browse endpoints for the json api
• fix slow shutdown with some libwebsocket versions