[Checkins] [zopefoundation/persistent] 7ceaf4: Mention that it was only 32-bit platforms.

[Jason Madden]

  Branch: refs/heads/issue137
  Home:   https://github.com/zopefoundation/persistent
  Commit: 7ceaf494aab1c75263e86ba269c7328f107b4578
      https://github.com/zopefoundation/persistent/commit/7ceaf494aab1c75263e86ba269c7328f107b4578
  Author: Jason Madden <jamadden at gmail.com>
  Date:   2020-03-18 (Wed, 18 Mar 2020)

  Changed paths:
    M CHANGES.rst

  Log Message:
  -----------
  Mention that it was only 32-bit platforms.