Tests

Add typing-extensions for python 3.9 #3

	name: Tests

	on: push

	jobs:
	tests:
	runs-on: ubuntu-latest

	strategy:
	matrix:
	python-version: ['3.9', '3.10', '3.11', '3.12']

	steps:
	- uses: actions/checkout@v4

	- name: Setup Python${{ matrix.python-version }}
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}

	- name: Set up cache
	uses: actions/cache@v4
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
	restore-keys: \|
	${{ runner.os }}-pip-

	- name: Install
	run: \|
	python -m pip install -U pip
	pip install --progress-bar off -U .[test]

	- name: Test
	run: pytest

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