Update django-atom to 0.14.1

[pyup-bot]

There's a new version of django-atom available.
You are currently using 0.12.7. I have updated it to 0.14.1

These links might come in handy: PyPI | Changelog | Repo

Changelog

0.14.1

++++++++++++++++++

• Add base class validation in atom.mixins.AdminTestCaseMixin

0.14.0

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• Add atom.mixins.AdminTestCaseMixin

0.12.8

+++++++++++++++++++

• Mark code as Python 3 compatible

Got merge conflicts? Close this PR and delete the branch. I'll create a new PR for you.

Happy merging! 🤖

[mention-bot]

@pyup-bot, thanks for your PR! By analyzing the history of the files in this pull request, we identified @ad-m to be a potential reviewer.

[coveralls]

Coverage remained the same at 82.541% when pulling fd16d6a on pyup-update-django-atom-0.12.7-to-0.14.1 into 744d759 on master.

[pyup-bot]

Closing this in favor of #115