[Checkins] [zopefoundation/zopetoolkit] 7974ff: Update to current zope.error release

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/zopetoolkit
  Commit: 7974ffde44bd845a829b659ce0c9f3d3bac77562
      https://github.com/zopefoundation/zopetoolkit/commit/7974ffde44bd845a829b659ce0c9f3d3bac77562
  Author: Michael Howitz <mh at gocept.com>
  Date:   2017-07-26 (Wed, 26 Jul 2017)

  Changed paths:
    M ztk-versions.cfg

  Log Message:
  -----------
  Update to current zope.error release