[Checkins] [zopefoundation/zope.authentication] 569cc8: Changes according to suggestions of @mgedmin.

[GitHub]

  Branch: refs/heads/py36
  Home:   https://github.com/zopefoundation/zope.authentication
  Commit: 569cc8791814019ba27eb356e69ceeaea203bac2
      https://github.com/zopefoundation/zope.authentication/commit/569cc8791814019ba27eb356e69ceeaea203bac2
  Author: Michael Howitz <mh at gocept.com>
  Date:   2017-05-11 (Thu, 11 May 2017)

  Changed paths:
    M tox.ini

  Log Message:
  -----------
  Changes according to suggestions of @mgedmin.