Zope-sendmail

==================

- Ensure that the 'queuedDelivery' directive has the same discriminator
as the 'directDelivery' directive (they are mutually incompatible).
https://bugs.launchpad.net/zope.sendmail/+bug/191143

- Avoid requeuing messages after an SMTP "recipients refused" error.
https://bugs.launchpad.net/zope.sendmail/+bug/1003288

==================

- Handle unicode usernames and passwords, encoding them to UTF-8. Fix for
https://bugs.launchpad.net/zope.sendmail/+bug/597143

==================

- Add not declared, but needed test dependency on `zope.component [test]`.

==================

- Remove no longer required testing dependency on zope.testing.

- Maildir storage for queue can now handle unicode passed in for message or
to/from addresses (change backported from repoze.sendmail).

- Tests use stdlib doctest instead of zope.testing.doctest.

==================

- Backward compatibility import of zope.sendmail.queue.QueueProcessorThread in
zope.sendmail.delivery.

==================

- Remove dependency on ``zope.security``: the security support is optional,
and only available if the ``zope.security`` package is available. This change
is similar to the optional security support introduced in ``zope.component``
3.8.0, and in fact it uses the same helpers.

- Sort by modification time the messages in zope.sendmail.maildir so earlier
messages are sent before later messages during queue processing.

- Add the new parameter ``processorThread`` to the queuedDelivery ZCML
directive: if False, the QueueProcessorThread is not started and thus an
independent process must process the queue; it defaults to True for b/c.

- Provide a console script ``zope-sendmail`` which can be used to process the
delivery queue in case processorThread is False. The console script can
either process the messages in the queue once, or run in "daemon" mode.