Update setuptools to 30.3.0

[pyup-bot]

There's a new version of setuptools available.
You are currently using 30.2.0. I have updated it to 30.3.0

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

Changelog

30.3.0

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• 394 via 862: Added support for declarative package config in a setup.cfg file <http://setuptools.readthedocs.io/en/latest/setuptools.htmlconfiguring-setup-using-setup-cfg-files>_.

30.2.1

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• 850: In test command, invoke unittest.main with
  indication not to exit the process.

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

Happy merging! 🤖

[coveralls]

Coverage remained the same at 96.296% when pulling 2f8fe4e on pyup-update-setuptools-30.2.0-to-30.3.0 into c437e5f on master.

[pyup-bot]

Closing this in favor of #18