Update mccabe to 0.7.0

[pyup-bot]

This PR updates mccabe from 0.5.0 to 0.7.0.

Changelog

0.7.0

* Drop support for all versions of Python lower than 3.6

* Add support for Python 3.8, 3.9, and 3.10

* Fix option declaration for Flake8

0.6.1

* Fix signature for ``PathGraphingAstVisitor.default`` to match the signature
for ``ASTVisitor``

0.6.0

* Add support for Python 3.6

* Fix handling for missing statement types

0.5.3

* Report actual column number of violation instead of the start of the line

0.5.2

* When opening files ourselves, make sure we always name the file variable

0.5.1

* Set default maximum complexity to -1 on the class itself

Links

• PyPI: https://pypi.org/project/mccabe
• Changelog: https://pyup.io/changelogs/mccabe/
• Repo: https://github.com/pycqa/mccabe