[Checkins] [zopefoundation/zopetoolkit] 872436: Update to current zope.hookable version

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/zopetoolkit
  Commit: 872436b53f4f92745d62c0ba0b9e542eb59c0493
      https://github.com/zopefoundation/zopetoolkit/commit/872436b53f4f92745d62c0ba0b9e542eb59c0493
  Author: Michael Howitz <mh at gocept.com>
  Date:   2017-07-27 (Thu, 27 Jul 2017)

  Changed paths:
    M ztk-versions.cfg

  Log Message:
  -----------
  Update to current zope.hookable version