style: Use 'cls' (not 'self') in class methods #118

	---

	name: tests

	on:
	push:
	pull_request:
	branches:
	- master

	jobs:
	lint:
	name: Linters
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	- name: Set up Python
	uses: actions/setup-python@v2
	with:
	python-version: 3.9
	- run: pip install flake8 flake8-import-order doc8 Pygments
	- run: flake8 .
	- run: doc8 README.rst

	tests:
	name: Tests
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version:
	- 3.7
	- 3.8
	- 3.9
	- nightly
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	- name: Set up Python ${{ matrix.pyver }}
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.pyver }}
	- run: python setup.py sdist
	- run: pip install dist/localstripe-*.tar.gz
	- run: python -m localstripe &
	# Wait for server to be up:
	- run: >
	timeout=5; while [ $((timeout--)) -ge 0 ]; do
	nc -z -w 1 localhost 8420; r=$?; [ $r -eq 0 ] && break; sleep 1;
	done; exit $r
	- run: ./test.sh

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