Compatibility, clean-up #15

	name: Build
	on: [push]
	jobs:
	cover:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v1
	- uses: actions/setup-python@v1
	with:
	python-version: 3.8
	- run: pip install django coverage==4.5.4 python-coveralls .
	- run: coverage run --source=. --omit=setup.py ./tests/manage.py test --verbosity=2
	- run: coveralls
	env:
	COVERALLS_REPO_TOKEN: ${{ secrets.COVERALLS_REPO_TOKEN }}
	test:
	runs-on: ubuntu-latest
	strategy:
	max-parallel: 4
	matrix:
	python-version: [3.7, 3.8, 3.9, 3.10, 3.11]
	django-requirement:
	- Django # latest
	- Django==4.2
	- Django==3.2
	- Django==2.2
	- Django==1.11
	steps:
	- uses: actions/checkout@v1
	- uses: actions/setup-python@v1
	with:
	python-version: ${{ matrix.python-version }}
	- run: pip install ${{ matrix.django-requirement }}
	- run: pip install .
	- run: ./tests/manage.py test --verbosity=2

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