Album version
New column albums.version and associated processing (see thread at https://forums.lyrion.org/forum/user-forums/logitech-media-server/1765250-extending-lyrion-s-use-of-tag-metadata-to-enhance-to-browse-interact-with-your-music#post1769954 )
The reason for this change is to allow users to (optionally) use an additional tag "VERSION" to distinguish different versions of the same album. This will enable future UI enhancements, for example to group together different versions of the same album. It should also make metadata matching simpler as albums.title can contain only the actual album name.
I've also made the database changes for the forthcoming enhancements to the Record Label PR, and changes to persistent track ID (see same thread above for discussion on that), to prevent forced rescans when these are done.