[Checkins] [zopefoundation/RestrictedPython] d57bf1: Switch to RTD theme.

[Michael Howitz]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/RestrictedPython
  Commit: d57bf1021760176c6417247e15d98ba73104bf17
      https://github.com/zopefoundation/RestrictedPython/commit/d57bf1021760176c6417247e15d98ba73104bf17
  Author: Michael Howitz <mh at gocept.com>
  Date:   2019-05-08 (Wed, 08 May 2019)

  Changed paths:
    M docs/conf.py
    M tox.ini

  Log Message:
  -----------
  Switch to RTD theme.