piquadrat/django-mailchimp — pull request #37 by micrypt (2014-11-07 01:46:52+00:00)
Title: models: avoid DeprecationWarning.

Django 1.6:
```
/home/ubuntu/.virtualenvs/…/local/lib/python2.7/site-packages/mailchimp/models.py:2: DeprecationWarning: django.utils.simplejson is deprecated; use json instead.
```