Add @czpython to authors (for fixing #122). Closes #174.
Implement TranslationQueryset.datetimes, which was introduced in Django 1.6
Merge pull request #175 from spectras/datetimes

Added support for django v1.6+ QueySet.datetimes method.
Added TestCase.assertThrowsWarning in the testing toolbox
Changed TranslationQueryset.language() to defer the call to get_language until query
Merge pull request #171 from spectras/lazy_language

Make TranslationQueryset.language() defer language resolution until the query is evaluated. Closes #72.
Removed _real_manager and _fallback_manager indirections as they were confusing and served no real purpose.
Made all 3 querysets used by TranslationManager customizable (translated, untranslated, default)
Reworked TranslationQueryset so its constructor takes the standard arguments again.