RemovedInSphinx40Warning: force_decode() is deprecated.

[jamadden]

With Sphinx 2.0, I get these warnings:

repoze/sphinx/autointerface.py:99: RemovedInSphinx40Warning: force_decode() is deprecated.
  docstrings = [prepare_docstring(force_decode(doc, None))]

[freddrake]

I think force_decode is only interesting on Python 2, so this shouldn't be difficult to deal with.

[freddrake]

See PR #14.

[freddrake]

PR #11 takes a different approach to the other updates made in #14, but doesn't address the force_decode change.

[dataflake]

Fixed by #17 , version 1.0.0 is now published on PyPI.