Version 29.0

• fix: client name showing as blank when pairing with MacOS
• fix: Spotify playback error "Could not find track data"
• fix: prevent OwnTone from hanging when a tcp connection can't be made
• fix: use libmount to detect filesystem mount events (previously undetected)
• fix: build errors with libcurl 7
• fix: build for platforms without fcopyfile() or copy_file_range()
• fix: ffmpeg, libplist and libxml2 deprecations
• fix: null-pointer dereference bug when handling dacp request
• new: support for "empty" operand in smart playlists
• new: Spotify OAuth redirection to github page instead of owntone.local
• web UI 3.0:
  • enhanced styling, layout consistency, colours streamlined
  • improve mobile responsiveness, simplify settings pages
  • added support for dark/light mode switching
  • switch to Bulma 1.0
  • fix Spotify search results not paginating correctly
  • fix translation inconsistencies and errors
  • add page to control outputs
  • add followed artists to the Spotify music page
  • add the cover artwork of Spotify playlists in the modal dialog
  • display artist visuals from Spotify
  • show cover of Spotify playlists
  • switch to Spotify Web SDK