musicbrainz/picard — pull request #250 by Sophist-UK (2014-03-21 00:43:14+00:00)
Title: A few ID3 tweaks

1. Mark some tags as unused (as they are not referred to anywhere else in the code)
2. Add TXXX:writer to id3
3. Add inc for discids and process them.
4. Add TDTG tagging time-stamp.
5. Move Work from TXXX to TOAL.