hongws/django-rest-framework-bulk @ unique_together

Miroslav Shubernetskiy 615393d2f9 removed unused imports		10 lat temu
..
__init__.py	e65445c9c9 moved existing mixins to drf2 package	10 lat temu
mixins.py	615393d2f9 removed unused imports	10 lat temu
serializers.py	db3c662fcb fixed typo and small optimization in update()	10 lat temu