Added forward/backward derivatives for divergence (#564) #1095

	name: "Static type checking"

	on: [push]

	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	pyversion: ['3.9', '3.12']
	timeout-minutes: 30

	steps:
	- uses: actions/checkout@v3
	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.pyversion }}

	- name: Install dependencies
	# install all requirements
	run: \|
	python -m pip install --upgrade pip
	pip install -r tests/requirements.txt
	pip install types-PyYAML
	- name: Test types with mypy
	continue-on-error: true
	run: \|
	python -m mypy --config-file pyproject.toml --pretty --package pde

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