[Checkins] [zopefoundation/ZODB] d03dd9: TransactionalUndo closes storages it opens.

[Jason Madden]

  Branch: refs/heads/issue268
  Home:   https://github.com/zopefoundation/ZODB
  Commit: d03dd972f151f948d45637a776da6ad1d825e1de
      https://github.com/zopefoundation/ZODB/commit/d03dd972f151f948d45637a776da6ad1d825e1de
  Author: Jason Madden <jamadden at gmail.com>
  Date:   2019-05-14 (Tue, 14 May 2019)

  Changed paths:
    M CHANGES.rst
    M src/ZODB/DB.py
    M src/ZODB/tests/testDB.py

  Log Message:
  -----------
  TransactionalUndo closes storages it opens.

Fixes #268.