Log Message:
py-beets: updated to 1.4.6

1.4.6:
The highlight of this release is "album merging," an oft-requested \ 
option in
the importer to add new tracks to an existing album you already have in your
library. This way, you no longer need to resort to removing the partial album
from your library, combining the files manually, and importing again.

Here are the larger new features in this release:

* When the importer finds duplicate albums, you can now merge all the
  tracks---old and new---together and try importing them as a single, combined
  album.
* :doc:/plugins/lyrics: The plugin can now produce reStructuredText files
  for beautiful, readable books of lyrics.
* A new :ref:from_scratch configuration option makes the importer remove old
  metadata before applying new metadata. This new feature complements the
  :doc:zero </plugins/zero> and :doc:scrub </plugins/scrub> plugins \ 
but is
  slightly different: beets clears out all the old tags it knows about and
  only keeps the new data it gets from the remote metadata source.