Plone.testing

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

- Fix for ZODB 5: Abort transaction before DB close.
[jensens, jimfulton]

- Remove BBB code and imports for Zope < 2.13.
[thet]

- Fix issue, which prevented using layered-helper on Python 3.
[datakurre]

- Fix ``.z2.Startup.setUpZCML()`` to be compatible with Zope >= 4.0a2.
[icemac]

- Fix version pins on the package itself to be able to run the tests.
[gforcada]

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

Rerelease of 4.2.0 as 5.0.0.

The version 4.2.0 had changed error handling in the public api, causing exceptions where before everything continued to work.

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

New:

- Refuse to work if user breaks test isolation.
[do3cc]
- Check that tests don't run together with ZopeTestCase
[do3cc]

Fixes:

- Fix tests for Zope 4, where the app root Control_Panel is not available anymore.
[thet]

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

Fixes:

- Rename all txt doctest files to rst. Reformat doctests.
[thet]

- PEP 8.
[thet]

- Depend on zope.testrunner, which was moved out from zope.testing.testrunner.
[thet]

- Add support for Zope 4.
[thet]

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

- Prevent exception masking in finally clause of zopeApp context.
[do3cc]

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

- Rerelease for clarity due to double release of 4.0.13.
[maurits]

- Added ``multiinit``-parameter to z2.installProduct to allow multiple initialize methods for a package
[tomgross]