Update WCS when shifting spectrum and fix bugs with arithmetic and redshift #137

	name: Release

	on:
	# NOTE: PR trigger is to ensure changes do not break packaging.
	pull_request:
	release:
	types: [released]
	workflow_dispatch:

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	build-n-publish:
	name: Build and publish Python 🐍 distributions 📦 to PyPI
	runs-on: ubuntu-latest
	if: github.repository == 'astropy/specutils'

	steps:
	- uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
	with:
	fetch-depth: 0

	- uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
	with:
	python-version: '3.12'

	- name: Install python-build and twine
	run: python -m pip install build "twine>=3.3" "importlib_metadata!=8.0.0"

	- name: Build package
	run: python -m build --sdist --wheel .

	- name: List result
	run: ls -l dist

	- name: Check dist
	run: python -m twine check --strict dist/*

	- name: Test package
	run: \|
	cd ..
	python -m venv testenv
	testenv/bin/pip install pytest pytest-astropy pytest-tornasync pytest-asdf-plugin specutils/dist/*.whl
	testenv/bin/pytest --astropy-header --remote-data --pyargs specutils

	# NOTE: Do not run this part for PR testing.
	- name: Publish distribution 📦 to PyPI
	uses: pypa/gh-action-pypi-publish@ed0c53931b1dc9bd32cbe73a98c7f6766f8a527e # v1.13.0
	if: github.event_name != 'pull_request'
	with:
	user: __token__
	password: ${{ secrets.PYPI_TOKEN }}

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