Merge pull request #43 from dcbaker/remove-python2 #61

	name: Unit tests

	on:
	push:
	paths:
	- '**.py'
	pull_request:
	paths:
	- '**.py'

	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [3.7, 3.8, 3.9]

	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 pytest
	- name: Test with pytest
	run: \|
	pytest tests
	- name: Doctest with pytest
	run: \|
	pytest --doctest-modules tests

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