Correct use of setuptools. Fixes #1 #1

	name: Publish to PyPI

	on:
	push:
	tags:
	- "20*"

	jobs:
	release-and-publish:
	name: Build and publish to PyPI
	runs-on: ubuntu-latest
	environment: release
	permissions:
	id-token: write

	steps:
	- name: Checkout source
	uses: actions/checkout@v3

	- name: Set up Python
	uses: actions/setup-python@v3
	with:
	python-version: "3.x"

	- name: Build source and wheel distributions
	run: \|
	python -m pip install --upgrade build twine
	python -m build
	twine check --strict dist/*

	- name: Publish distribution to PyPI
	uses: pypa/gh-action-pypi-publish@release/v1

	# Remember to manually create release on GitHub using the same tag.

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