[Checkins] [zopefoundation/Products.MailHost] aed3fb: Use `@implementer` class decorator.

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/Products.MailHost
  Commit: aed3fbaf8ebfd9bfdf5392e37291bcc92fb4cc3f
      https://github.com/zopefoundation/Products.MailHost/commit/aed3fbaf8ebfd9bfdf5392e37291bcc92fb4cc3f
  Author: Hanno Schlichting <hanno at hannosch.eu>
  Date:   2016-09-13 (Tue, 13 Sep 2016)

  Changed paths:
    M CHANGES.rst
    M src/Products/MailHost/MailHost.py

  Log Message:
  -----------
  Use `@implementer` class decorator.