Enable tox tests and github actions around it #25

	name: run tox

	# Controls when the action will run. Workflow runs when manually triggered using the UI
	# or API.
	on:
	workflow_dispatch:
	push:
	branches:
	- 'master'
	- 'tox-test'
	release:
	types: [published]

	jobs:
	build:
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-latest, macos-latest, windows-latest]
	python-version: ["3.8", "3.9"]
	testsuite: ["minimal"] # "full"
	steps:
	- uses: actions/checkout@master
	- name: set up python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	cache: 'pip'
	- name: install system dependencies (linux)
	if: runner.os == 'Linux'
	# only managed to install system dependencies on Linux runners
	run: \|
	sudo apt update
	sudo apt install libgmp-dev libmpfr-dev libmpc-dev
	- name: install python dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install tox
	- name: run tox (linux)
	# since system dependencies could only be installed on Linux runners, we run the "full" suite only on Linux ...
	if: runner.os == 'Linux'
	run: tox -e py-${{ matrix.testsuite }} -- --hypothesis-profile=ci
	- name: run tox (macos or windows - minimal)
	if: runner.os != 'Linux' && matrix.testsuite == 'minimal'
	run: tox -e py-minimal -- --hypothesis-profile=ci
	- name: run tox (macos or windows - recommendedextra)
	# ... on all other OS we run the "recommendedextra" suite instead of the "full" suite
	if: runner.os != 'Linux' && matrix.testsuite == 'full'
	run: tox -e py-recommendedextra -- --hypothesis-profile=ci

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