One of our goals with Documenteer 0.6 is to track the latest versions of Sphinx and Sphinx extensions so that we can start to take advantage of new functionality and bug fixes.

We've already removed the pin on Sphinx itself; the purpose of this ticket is to start removing pins on extensions such as numpydoc, automodapi, and sphinx-click.

Part of this ticket will be to test Documenteer against stack documention, technote, and package documentation builds. And hopefully to develop a way to semi-automate this sort of downstream test suite.