Update ci.yml #345

	name: CI
	on: [push, pull_request]

	jobs:
	test:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [ "3.7", "3.8", "3.9", "3.10"]
	steps:
	- uses: actions/checkout@v2
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements/dev.txt -r requirements/prod.txt
	pip install .
	- name: unit testing
	run: \|
	cd tests
	pytest .
	- name: Code formatting
	run: \|
	black --check libpyvinyl/

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