fix typing with Optional[] #134

	name: Python application

	on:
	workflow_dispatch:
	push:
	pull_request:

	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python: ["3.8", "3.9", "3.10", "3.11"]

	steps:
	- uses: actions/checkout@v3
	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python }}
	- name: Install dependencies
	run: \|
	pip install poetry
	poetry install
	- name: Type check with mypy
	run: \|
	poetry run mypy .
	- name: Lint with ruff
	run: \|
	poetry run ruff check .
	- name: Lint with isort
	run: \|
	poetry run isort --check .
	- name: Lint with black
	run: \|
	poetry run black --check .
	- name: Download sample data
	run: \|
	wget https://static.webknossos.org/data/l4_sample.zip
	unzip l4_sample.zip
	- name: Run tests
	run: \|
	poetry run pytest -vv tests/test_v2.py tests/test_v3.py tests/test_store.py
	- name: Run perf tests
	run: \|
	TEST_SIZE=128 poetry run pytest -vv -s tests/test_perf.py

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