update and improve GitHub Actions workflows #1

	# this workflow builds the package and, only when triggered by a release, publishes it to PyPI
	name: build

	# events that trigger this workflow to run
	on:
	release:
	types: [ released ]
	pull_request:
	workflow_dispatch:

	# only allow one instance of this workflow to run per commit or ref; cancel in-progress ones
	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	# these jobs use the OpenAstronomy reusable build / publish workflow
	jobs:
	build:
	uses: OpenAstronomy/github-actions-workflows/.github/workflows/publish_pure_python.yml@v1
	with:
	# only upload wheels to PyPI if the triggering event was a release
	upload_to_pypi: ${{ (github.event_name == 'release') && (github.event.action == 'released') }}
	secrets:
	pypi_token: ${{ secrets.PYPI_PASSWORD_STSCI_MAINTAINER }}

	# use the following block instead if your Python package uses C extensions

	# uses: OpenAstronomy/github-actions-workflows/.github/workflows/publish.yml@v1
	# with:
	# # only upload wheels to PyPI if the triggering event was a release
	# upload_to_pypi: ${{ (github.event_name == 'release') && (github.event.action == 'released') }}
	# targets: \|
	# # Linux wheels
	# - cp3*-manylinux_x86_64
	# # MacOS wheels
	# - cp3*-macosx_x86_64
	# # Until we have arm64 runners, we can't automatically test arm64 wheels
	# - cp3*-macosx_arm64
	# sdist: true
	# secrets:
	# pypi_token: ${{ secrets.PYPI_PASSWORD_STSCI_MAINTAINER }}

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