adding ruamel.yaml as requirement #59

	name: Build and upload to PyPI

	# Build on every branch push, tag push, and pull request change:
	#on: [push, pull_request]
	# Alternatively, to publish when a (published) GitHub Release is created, use the following:
	on:
	push:
	pull_request:
	release:
	types:
	- published

	jobs:
	build_and_upload_pypi:
	runs-on: ubuntu-latest

	# upload to PyPI on every tag starting with 'v'
	#if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v')
	# alternatively, to publish when a GitHub Release is created, use the following rule:
	if: github.event_name == 'release' && github.event.action == 'published'
	steps:
	- name: checkout repository
	uses: actions/checkout@v3

	- name: Set up Python
	uses: actions/setup-python@v4
	id: cp
	with:
	python-version: "3.11"
	update-environment: true

	- name: Install pypa/build
	run: \|
	'${{ steps.cp.outputs.python-path }}' -m pip install build

	- name: Build a binary wheel and a source tarball
	run: \|
	'${{ steps.cp.outputs.python-path }}' -m build .

	- uses: pypa/gh-action-pypi-publish@v1.8.5
	with:
	user: __token__
	password: ${{ secrets.PYPI_API_TOKEN }}
	# To test: repository_url: https://test.pypi.org/legacy/

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