[Checkins] [zopefoundation/Zope] 6d455d: Add PR reference

[Michael Howitz]

  Branch: refs/heads/4.x
  Home:   https://github.com/zopefoundation/Zope
  Commit: 6d455dfd1247ed6de948120801f0f9b785306bd9
      https://github.com/zopefoundation/Zope/commit/6d455dfd1247ed6de948120801f0f9b785306bd9
  Author: Michael Howitz <mh at gocept.com>
  Date:   2020-07-10 (Fri, 10 Jul 2020)

  Changed paths:
    M CHANGES.rst

  Log Message:
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  Add PR reference