Plone-folder

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

Breaking changes:

- Drop support for Python 2.6/ Plone 4.3
[jensens]

Bug fixes:

- More Python 2 / 3 compatibility
[pbauer, ale-rt]

- Fix deprecated LazyMap import
[jensens]

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

New features:

- Improve logging in case ordered index is not consistent
[tomgross]

Bug fixes:

- Remove ancient buildout config
[tomgross]

- Replace deprecated testing assertion calls
[tomgross]

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

Bug fixes:

- Add Python 2 / 3 compatibility
[vincero]

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Bug fixes:

- Use zope.interface decorator.
[gforcada]

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Fixes:

- Update testing layers to use best practices and remove ZopeTestCase dependency,
which should fix its test isolation problems.
[gforcada]

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- Depend on ``Products.CMFCore`` and remove fake-cmf, because this confuses
more than it helps to reduce complexcity.
[jensens]

- Cleanup: PEP8 and do not use ``id`` built-in as identifier.
[jensens]