[Checkins] [zopefoundation/Products.MailHost] 100ab4: Require Zope 4.

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/Products.MailHost
  Commit: 100ab4b8c2cd63ee02e529c4c574d3ef8805d75b
      https://github.com/zopefoundation/Products.MailHost/commit/100ab4b8c2cd63ee02e529c4c574d3ef8805d75b
  Author: Hanno Schlichting <hanno at hannosch.eu>
  Date:   2016-10-26 (Wed, 26 Oct 2016)

  Changed paths:
    M CHANGES.rst
    M setup.py

  Log Message:
  -----------
  Require Zope 4.