add release-drafter #42

	name: CI
	on:
	push:
	pull_request:
	workflow_dispatch:

	defaults:
	run:
	working-directory: postfix_nullclient

	jobs:
	lint:
	name: "CI"
	runs-on: ubuntu-latest
	steps:
	- name: Check out codebase
	uses: actions/checkout@v2
	with:
	fetch-depth: 0
	path: postfix_nullclient

	- name: Set up Python 3
	uses: actions/setup-python@v2
	with:
	python-version: "3.8"
	- name: Set up pip
	run: pip3 install --upgrade pip

	- name: Install tox
	run: sudo apt update && sudo apt install -y tox

	- name: Run Tox
	run: tox

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