Update actions/checkout to v4 #114

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

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]

	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [
	# Can't go earlier than 3.8 because I use math.prod
	'3.8',
	'3.9',
	'3.10',
	'3.11',
	'3.12',
	]
	steps:
	- uses: actions/checkout@v4
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: pip install -r requirements.txt
	- name: Check errors, style, and complexity with flake8
	run: \|
	flake8 .
	- name: Check formatting with Black
	run: \|
	black --check .
	- name: Test with pytest
	run: \|
	pytest -p no:doctest --runslow year_*

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