Zope.publisher

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

- Avoid traceback reference cycle in ``zope.publisher.publish.publish``.
- Handle empty Content-Type environment variable gracefully.

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- Fix test compatibility with zope.interface 5.4.

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

- Port form data parsing to ``multipart``, which is a new dependency. See
`issue 39 <https://github.com/zopefoundation/zope.publisher/issues/39>`_.
Note that as a result ``FileUpload`` objects no longer have a ``name``
attribute: the ``name`` attribute couldn't be used in portable code in any
case, and the usual methods on open files should be used instead.

- Add support for Python 3.9.

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- Fix text/bytes handling on Python 3 for some response edge cases. See
`pull request 51
<https://github.com/zopefoundation/zope.publisher/pull/51>`_.

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

- Add support for Python 3.8.

- Ensure all objects have a consistent interface resolution order. See
`issue 49
<https://github.com/zopefoundation/zope.publisher/issues/49>`_.

- Drop support for the deprecated ``python setup.py test`` command.

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

- Avoid using ``urllib.parse.splitport()`` which was deprecated in Python 3.8.
See `issue 38 <https://github.com/zopefoundation/zope.publisher/issues/38>`_