Add wheels.yml workflow for release to PyPI #1

	name: Build and upload to PyPI

	on:
	push:
	pull_request:
	release:
	types:
	- released
	- prereleased

	jobs:
	build_wheels:
	name: Build wheels on ${{ matrix.os }}
	runs-on: ${{ matrix.os }}
	strategy:
	fail-fast: false
	matrix:
	os: [ubuntu-latest, windows-latest, macos-latest]

	steps:
	- uses: actions/checkout@v3
	with:
	fetch-depth: 0

	- name: Build wheels
	run: pip wheel . -w wheels

	- uses: actions/upload-artifact@v3
	with:
	name: wheels
	path: ./dist

	build_sdist:
	name: Build source distribution
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	with:
	fetch-depth: 0

	- name: Build sdist
	run: python setup.py sdist

	- uses: actions/upload-artifact@v3
	with:
	name: sdist
	path: dist/*.tar.gz

	list_artifacts:
	name: List build artifacts
	needs: [build_wheels, build_sdist]
	runs-on: ubuntu-latest
	steps:
	- uses: actions/download-artifact@v3
	with:
	name: sdist
	path: dist

	- uses: actions/download-artifact@v3
	with:
	name: wheels
	path: dist

	- name: test
	run: \|
	ls
	ls dist

	upload_pypi:
	needs: [build_wheels, build_sdist]
	if: "startsWith(github.ref, 'refs/tags/')"
	runs-on: ubuntu-latest
	steps:
	- uses: actions/download-artifact@v3
	with:
	name: sdist
	path: dist

	- uses: actions/download-artifact@v3
	with:
	name: wheels
	path: dist

	- uses: pypa/gh-action-pypi-publish@release/v1
	with:
	packages-dir: dist
	skip-existing: true

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