MusicBrainz Picard 2.4.0b2

Bugfixes

• PICARD-1864 - Adding single files does ignore existing MBIDs
• PICARD-1866 - Coverart pane does not update during / after saving files
• PICARD-1867 - Guess format fallback is broken
• PICARD-1868 - CAA type selection dialog does not translate "Unknown"