add example for deleting unused tags #136

	name: build

	on: [push]

	jobs:
	container:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: Install pip dependencies
	run: pip install build twine
	- name: Build binary wheel and source tarball
	run: \|
	python -m build --sdist --wheel --outdir dist
	twine check dist/*
	# Release if there is a new tag.
	- name: Publish to pypi
	if: ${{ startsWith(github.ref, 'refs/tags/v') }}
	uses: pypa/gh-action-pypi-publish@release/v1
	with:
	password: ${{ secrets.PYPI_API_TOKEN }}

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