[Checkins] [zopefoundation/RestrictedPython] 63f7da: add tox to dependencies

[GitHub]

  Branch: refs/heads/remove_six
  Home:   https://github.com/zopefoundation/RestrictedPython
  Commit: 63f7da0affbb3f83367ff40f2f73e5de88ab63f1
      https://github.com/zopefoundation/RestrictedPython/commit/63f7da0affbb3f83367ff40f2f73e5de88ab63f1
  Author: Alexander Loechel <Alexander.Loechel at lmu.de>
  Date:   2017-01-31 (Tue, 31 Jan 2017)

  Changed paths:
    M setup.py

  Log Message:
  -----------
  add tox to dependencies