Implemented translationformset_factory to build formsets of an instance's translations
Documented the new translation formset feature
Updated project metadata for v0.4
Merge pull request #169 from spectras/publish_v0.4

Update project metadata for v0.4
Merge pull request #157 from spectras/translation_formset

Formset of all translations of an instance. Smartly combines translations with shared models to trigger signals and custom save. Closes #131.
Removed _real_manager and _fallback_manager indirections as they were confusing and served no real purpose.