https://medium.com/@eikonomega/getting-started-with-sphinx-autodoc-part-1-2cebbbca5365
https://medium.com/@richdayandnight/a-simple-tutorial-on-how-to-document-your-python-project-using-sphinx-and-rinohtype-177c22a15b5b
https://pythonhosted.org/an_example_pypi_project/sphinx.html#a-subpoint