added Edition model
django-countries support, proper py3 unicode music models, label model
force_text for py3 unicode support
satisfy the import-nazi
Add __str__ to the list of coverage exclusions

I might remove __unicode__ at some point to encourage us to stop using it. Please use Py3k compatible shims instead of defining __unicode__.

Danke.
alphabetize things i touched
fixed reversed tuple for singles
i18n
ArtistAlias plural name correction
Merge pull request #29 from jzelinskie/feature/music-edition-model

Music Models Update
Merge branch 'feature/music-edition-model' into develop
Merge remote-tracking branch 'upstream/develop' into develop