The sphinx_automodapi extension is now available as a standalone package at http://sphinx-automodapi.readthedocs.io/en/latest/ / https://github.com/astropy/sphinx-automodapi

Formerly it was part of astropy-helpers. Switching to this standalone version is good for us since it will reduce the overall weight of documenteer's dependencies.

This is targeted for the 0.3 release of documenteer.