[Checkins] [zopefoundation/ZEO] af80af: Prep 4.0.0b1 release.

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/ZEO
  Commit: af80af7c668c0ce93f74cb906b0f85d7aef61619
      https://github.com/zopefoundation/ZEO/commit/af80af7c668c0ce93f74cb906b0f85d7aef61619
  Author: Tres Seaver <tseaver at palladion.com>
  Date:   2013-05-20 (Mon, 20 May 2013)

  Changed paths:
    M CHANGES.txt
    M setup.py

  Log Message:
  -----------
  Prep 4.0.0b1 release.