[Checkins] [zopefoundation/Zope] 2a79e9: - publish new ZServer pin on master

[Jens Vagelpohl]

  Branch: refs/heads/gh-pages
  Home:   https://github.com/zopefoundation/Zope
  Commit: 2a79e970be8265f6569ec9c0c35fe8f1fcfd948c
      https://github.com/zopefoundation/Zope/commit/2a79e970be8265f6569ec9c0c35fe8f1fcfd948c
  Author: Jens Vagelpohl <jens at netz.ooo>
  Date:   2019-05-17 (Fri, 17 May 2019)

  Changed paths:
    M releases/master/constraints.txt
    M releases/master/versions-prod.cfg

  Log Message:
  -----------
  - publish new ZServer pin on master