Extension for flake8 for validating Python code style using black
copied from cf-staging / flake8-blackBlack, "The Uncompromising Code Formatter", is normally run to edit your Python code in place to match their coding style, a strict subset of the PEP 8 style guide. The point of this plugin is to be able to run black --check ... from within the flake8 plugin ecosystem. You might use this via a git pre-commit hook, or as part of your continuous integration testing.
