Zope-testing

------------------

- Remove the deprecated ``zope.testing.doctest``.

- Add Python 3 support.

- Fix test which fails if there is a file named `Data.fs` in the current
working directory.

-------------------

- Fix test of broken symlink handling to not break on Windows.

-------------------

- Fix removal of broken symlinks on Unix.

-------------------

- Remove ``zope.testing.testrunner``, which now is moved to zope.testrunner.

- Update fix for LP 221151 to a spelling compatible with Python 2.4.

------------------

- LP 579019: When layers are run in parallel, ensure that each ``tearDown``
is called, including the first layer which is run in the main
thread.

- Deprecate ``zope.testing.testrunner`` and ``zope.testing.exceptions``.
They have been moved to a separate zope.testrunner module, and will be
removed from zope.testing in 4.0.0, together with ``zope.testing.doctest``.

------------------

- LP 560259: Fix subunit output formatter to handle layer setup
errors.

- LP 399394: Add a ``--stop-on-error`` / ``--stop`` / ``-x`` option to
the testrunner.

- LP 498162: Add a ``--pdb`` alias for the existing ``--post-mortem``
/ ``-D`` option to the testrunner.

- LP 547023: Add a ``--version`` option to the testrunner.

- Add tests for LP 144569 and 69988.

https://bugs.launchpad.net/bugs/69988

https://bugs.launchpad.net/zope3/+bug/144569