add more type annotations #68

	name: CI
	on: [push, pull_request]
	jobs:
	black:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- uses: actions/setup-python@v2
	with:
	python-version: '3.9'
	- run: pip install riot==0.4.0
	- run: riot -v run -s black -- --check .
	mypy:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- uses: actions/setup-python@v2
	with:
	python-version: '3.9'
	- run: pip install riot==0.4.0
	- run: riot -v run mypy
	flake8:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- uses: actions/setup-python@v2
	with:
	python-version: '3.9'
	- run: pip install riot==0.4.0
	- run: riot -v run flake8
	test:
	strategy:
	matrix:
	os: [ubuntu-latest, macos-latest]
	python-version: ["3.8", "3.9", "3.10"]
	runs-on: ${{ matrix.os }}
	steps:
	- uses: actions/checkout@v2
	- name: Setup Python
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}
	- name: install riot
	run: pip install riot==0.4.0
	- name: run tests
	run: riot -v run --python=${{ matrix.python-version }} test -- --cov=asyncio_connection_pool --cov-branch --cov-config=.coveragerc
	- name: upload coverage
	run: pip install coveralls && coveralls
	env:
	COVERALLS_REPO_TOKEN: ${{ secrets.COVERALLS_REPO_TOKEN }}
	- name: print coverage
	run: pip install coverage && coverage report

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