Update coveralls to 3.1.0

[pyup-bot]

This PR updates coveralls from 3.0.1 to 3.1.0.

Changelog

3.1.0

Features

* **cli**:  add `--basedir` and `--submit` options (287) ([165a5cd1](165a5cd1))
* **github:**  push coverage info from tags (284) ([0a49bd28](0a49bd28))

<a name="3.0.1"></a>

Links

• PyPI: https://pypi.org/project/coveralls
• Changelog: https://pyup.io/changelogs/coveralls/
• Repo: http://github.com/TheKevJames/coveralls-python

[coveralls]

Coverage remained the same at 86.413% when pulling 2b8383a on pyup-update-coveralls-3.0.1-to-3.1.0 into 2a4f993 on master.