Build

Added `py.typed` file and enabled `implicit_optional` #78

	# This workflow will install Python dependencies, run tests and lint with a single version of Python
	# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions

	name: Build

	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	jobs:
	build:
	strategy:
	fail-fast: false
	matrix:
	python_version: ["3.7"]
	platform: ["ubuntu-latest"]

	runs-on: ${{ matrix.platform }}

	name: test ${{ matrix.platform }} (py${{ matrix.python_version }})

	steps:
	- uses: actions/checkout@v2
	- name: Set up Python ${{ matrix.python_version }}
	uses: actions/setup-python@v2
	with:
	python-version: "${{ matrix.python_version }}"
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements.txt --user
	- name: Run mypy
	run: \|
	python -m mypy req_compile
	env:
	MYPYPATH: req-compile/stubs
	- name: Run pylint
	run: \|
	python -m pylint req_compile
	- name: Test with pytest
	run: \|
	python -m pytest

	formatting:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Set up Python 3.11
	uses: actions/setup-python@v2
	with:
	python-version: "3.11"
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements.txt --user
	- name: Run black
	run: \|
	black --check --diff req_compile
	- name: Run isort
	run: \|
	isort --check-only req_compile

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