Prep PR for 0.4.0 Release (#801) #53

	name: Publish package to PyPI
	on:
	push:
	tags:
	- '*'
	jobs:
	publish:
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@master
	- name: Set up Python 3.9
	uses: actions/setup-python@v1
	with:
	python-version: 3.9
	- name: Get release version
	run: \|
	echo "CHANGELOG_VERSION=$(cat CHANGELOG.md \| grep -oP '(?<=###\s)(.*)(?=\s\-)' \| head -n 1 \| sed 's/Version\s/v/')" >> $GITHUB_ENV
	echo "TAG_VERSION=`echo $(git describe --tags --abbrev=0)`" >> $GITHUB_ENV
	- name: Check changelog release version
	if: ${{ env.TAG_VERSION != env.CHANGELOG_VERSION }}
	run: \|
	echo "CHANGELOG_VERSION($CHANGELOG_VERSION) is different from TAG_VERSION($TAG_VERSION)"
	exit 1
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install build
	- name: Get all git tags
	run: git fetch --tags -f
	- name: Build package
	run: \|
	python -m build --sdist --wheel
	- name: Get package size
	run: echo "PKG_SIZE=$(find dist -maxdepth 1 -regex '.*gz' \| xargs stat --format='%s')" >> $GITHUB_ENV
	- name: Check package size
	if: ${{ env.PKG_SIZE > 1e+8 }}
	run: \|
	echo "PKG_SIZE($PKG_SIZE bytes) is greater than 100MB"
	exit 1
	- name: Publish package
	if: startsWith(github.ref, 'refs/tags')
	uses: pypa/gh-action-pypi-publish@master
	with:
	skip_existing: true
	password: ${{ secrets.PYPI_API_TOKEN }}

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