Black

Fix CI errors #221

	# mostly copied from mypy.yml
	name: Black

	on:
	push:
	branches:
	- master
	pull_request:

	jobs:
	build:
	runs-on: ubuntu-latest
	name: Black
	steps:
	- uses: actions/checkout@v1
	- uses: actions/setup-python@v1
	with:
	python-version: 3.8
	- name: Install Dependencies
	run: \|
	pip install poetry && poetry install
	- name: black
	run: \|
	poetry run python3 -m black --check sansio_lsp_client tests

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