Add black lint (#483) #127

	name: CI
	on:
	- push
	- pull_request
	jobs:
	test:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: Set up Python
	uses: actions/setup-python@v3
	with:
	python-version: "3.7"
	- name: Install dependencies
	run: \|
	pip install --upgrade pip
	pip install -r requirements-dev.txt
	- name: Lint
	run: flake8 --show-source --statistics
	- name: Blint
	run: black --check --diff .
	- name: Run tests
	run: pytest

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