see below #347

	name: Publish to TestPyPI

	on: push

	jobs:
	build-and-publish:
	name: Build and publish distributions to TestPyPi
	runs-on: ubuntu-18.04

	steps:
	- name: Checkout source
	uses: actions/checkout@master

	- name: Append build number to version
	uses: ./.github/actions/append-buildnum
	with:
	package: sizebot

	- name: Set up Python 3.8
	uses: actions/setup-python@v1
	with:
	python-version: 3.8

	- name: Install build dependencies
	run: python -m pip install build --user

	- name: Build distributions
	run: python -m build --sdist --wheel --outdir dist/ .

	- name: Publish distribution to Test PyPI
	uses: pypa/gh-action-pypi-publish@master
	with:
	password: ${{ secrets.TEST_PYPI_API_TOKEN }}
	repository_url: https://test.pypi.org/legacy/

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