[Checkins] [zopefoundation/Persistence] e619a6: Add change log entry.

[GitHub]

  Branch: refs/heads/upd_to_persistent_4.2.3
  Home:   https://github.com/zopefoundation/Persistence
  Commit: e619a6934fb5ed7dfe7c0491bc1bf99ef9d854c7
      https://github.com/zopefoundation/Persistence/commit/e619a6934fb5ed7dfe7c0491bc1bf99ef9d854c7
  Author: Michael Howitz <mh at gocept.com>
  Date:   2018-02-02 (Fri, 02 Feb 2018)

  Changed paths:
    M CHANGES.rst

  Log Message:
  -----------
  Add change log entry.
[skip ci]