Revert back the JSON native field type from PG 9.2 to PG 9.3, because it causes more problems than it solves. PG 9.2 support seems incomplete.
Merge pull request #48 from Karmak23/master

Pull request for https://github.com/bradjasper/django-jsonfield/issues/47
Check for primary key on object before checking if it's empty. Fixes special case for South datamigrations.
Bumped version
Merge branch 'master' of github.com:bradjasper/django-jsonfield
Fix signature of six.with_metaclass.
Merge pull request #54 from carljm/six-1.4-compat

Fix signature of six.with_metaclass.
bump version to 0.9.19
Merge branch 'master' of git://github.com/bradjasper/django-jsonfield

Conflicts:
	jsonfield/fields.py