Use transaction.atomic, drop support for django 1.4 and 1.5
Merge branch 'master' into fix_mysql
Make the handle management command not atomic because it takes too long
Fix #67: support INDEX_SEARCH_NAMES in django 1.7 migrations
Autocommit is not an option for python 3
Support MySQL quacks.

https://code.djangoproject.com/ticket/21597#comment:29
Backported transaction.atomic for django < 1.6
Use atomic inside the try/except
Revert "Backported transaction.atomic for django < 1.6"

This reverts commit 81f96d61ac3ec777ae564fc215d976ff98d0093b.

Conflicts:
	cities_light/management/commands/cities_light.py
Version bump 3.0.0