Fixes horizon units. See issue #767 #911

	name: REBOUND (python)

	on: [push, pull_request]

	jobs:
	build:
	name: Python tests on ${{ matrix.os }} (${{ matrix.python-version }})
	timeout-minutes: 10

	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
	os: [ubuntu-latest, windows-2019, macos-11]

	steps:
	- uses: actions/checkout@v3
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install pytest
	pip install -r requirements.txt
	pip install multiprocess
	- name: Build package
	run: pip install -e .
	- name: Output package contents
	run: \|
	pip show rebound -vf
	- name: Running unittests
	run: \|
	python -m unittest discover -s rebound/tests/ -v
	- name: Running python examples
	run: \|
	python python_examples/dragforce/problem.py
	python python_examples/horizons/problem.py
	python python_examples/megno_simple/problem.py
	python python_examples/orbital_elements/problem.py
	python python_examples/outersolarsystem/problem.py
	python python_examples/simple_orbit/problem.py
	- name: Running remaining python examples
	# Skipping on Windows because of multiprocessing
	if: ${{ contains(matrix.os, 'ubuntu') }}
	run: \|
	python python_examples/longtermtest/problem.py
	python python_examples/megno/problem.py

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