[Checkins] [zopefoundation/transaction] 14a25c: Support abort hooks (symmetrically to commit hooks...

[Dieter Maurer]

  Branch: refs/heads/abort_hooks_#77
  Home:   https://github.com/zopefoundation/transaction
  Commit: 14a25c6f3e6eabe06087689102887cd816785e6c
      https://github.com/zopefoundation/transaction/commit/14a25c6f3e6eabe06087689102887cd816785e6c
  Author: dieter <dieter at handshake.de>
  Date:   2019-05-07 (Tue, 07 May 2019)

  Changed paths:
    M CHANGES.rst
    M transaction/_transaction.py
    M transaction/interfaces.py
    M transaction/tests/test__transaction.py

  Log Message:
  -----------
  Support abort hooks (symmetrically to commit hooks) #77