"beet import -i" now tags items instead of albums. There are many loose ends to
tie up (marked with TODOs in the source):
- What to do about applying non-track metadata to matched tracks? Currently it's
just left in place.
- Plugin autotag candidates for tracks.
- No user querying yet.
- Non-autotagged -i import are unimplemented.
And, on top of those:
- Need to remove the action.TRACKS workflow and replace it with an option that
lets you jump over to the individual-track interface from the album tagger.
