CI: run tests on 3.10 and 3.11, drop pre-3.9 #87

	---
	name: Tests

	on: [push]

	jobs:
	test:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [3.9, 3.10, 3.11]

	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
	python -m pip install -r requirements-dev.txt
	python -m pip install -r requirements.txt
	- name: Test with pytest
	run: \|
	pytest

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