[Checkins] [zopefoundation/zopetoolkit] 336820: Update to current versions.

[GitHub]

  Branch: refs/heads/current-versions
  Home:   https://github.com/zopefoundation/zopetoolkit
  Commit: 336820879777d1325098969da08662fe9aaa1e78
      https://github.com/zopefoundation/zopetoolkit/commit/336820879777d1325098969da08662fe9aaa1e78
  Author: Michael Howitz <mh at gocept.com>
  Date:   2017-07-28 (Fri, 28 Jul 2017)

  Changed paths:
    M ztk-versions.cfg

  Log Message:
  -----------
  Update to current versions.

Especially Sphinx got a bunch of new dependencies where requests seems to be
the heaviest one as it has a handful of dependencies itself.