Fix empty FileField handling (close #215).
Fix admin inlines recursion problem in Django 1.6 (ref #214).
fixed compatibility with nested inlines (https://github.com/Soaa-/django-nested-inlines)
Fix form submission (close #219).
Update docs about south/sync_translation_fields (close #216, ref #106).
Some python3 compatibility fixes (close #220).
Merge pull request #218 from abstraktor/master

Fix compatibility with django-nested-inlines.
Add TranslationOptions fields reference to docs.
Prepared 0.7.3 release.
Updated PKG-INFO.