drop python<=3.7 support #158

	# Build releases and (on tags) publish to PyPI
	name: Release

	# always build releases (to make sure wheel-building works)
	# but only publish to PyPI on tags
	on:
	push:
	tags:
	- "*"
	branches:
	- main
	pull_request:

	jobs:
	build-release:
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v2
	- uses: actions/setup-python@v2
	with:
	python-version: 3.8

	- name: install build package
	run: \|
	pip install --upgrade pip
	pip install build
	pip freeze

	- name: build release
	run: \|
	python -m build --sdist --wheel .
	ls -l dist

	- name: publish to pypi
	uses: pypa/[email protected]
	if: startsWith(github.ref, 'refs/tags/')
	with:
	user: __token__
	password: ${{ secrets.pypi_password }}

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