Finish the implementation of Streamlet and add tests #9

	name: lints

	on: pull_request

	jobs:
	verify:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2

	- name: Install gnome-keyring
	# https://github.com/python-poetry/poetry/issues/2692
	run: sudo apt-get install gnome-keyring

	- name: Install poetry
	run: pip install --user poetry

	- name: Run poetry check
	run: poetry check

	- name: Install dependencies
	run: poetry install --no-root

	- name: Run flake8
	run: poetry run flake8

	- name: Run pyanalyze
	# `poetry run pyanalyze .` doesn't work in CI for some reason.
	run: poetry run python -m pyanalyze .

Provide feedback