add mingw-w64 ci #298

	name: Python CI

	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	jobs:
	unit-test:

	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [3.7, 3.8, 3.9, '3.10', '3.11']

	steps:
	- uses: actions/checkout@v2
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v1
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install flake8 pytest wheel
	if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
	- name: Lint with flake8
	run: \|
	# stop the build if there are Python syntax errors or undefined names
	flake8 . --exclude deps --count --select=E9,F63,F7,F82 --show-source --statistics
	# exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
	flake8 . --exclude deps --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
	- name: Build and install
	run: python setup.py build_ext install
	- name: Test with pytest
	run: cd python && pytest

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