ci: set up GH action that enforces black formatting on changed lines #10

	name: Python Formatting

	on: [push, pull_request]

	jobs:
	darker:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	with:
	fetch-depth: 0
	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	cache: 'pip'
	- name: Install darker
	run: pip install darker
	- name: Run darker
	run: \|
	git log --decorate --oneline
	darker --revision origin/main . --diff --check

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