Zope-traversing

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

- Replace deprecated ``zope.component.adapts`` usage with equivalent
``zope.component.adapter`` decorator.

- Replace deprecated ``zope.interface.implements`` usage with equivalent
``zope.interface.implementer`` decorator.

- Drop support for Python 2.4 and 2.5.

- Add support for Python 3.3.

- Fix dependencies : removed ``zope.tal`` and added ``zope.browserpage``.

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- Re-release of 3.13.1 as a feature version as it introduces dependencies on
new feature releases.

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

- Fix ZCML-related dependencies.

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

- When a ``__parent__`` attribute is available on an object, it is
always used for absolute URL construction, and no ILocation adapter
lookup is performed for it. This was the previous behavior but was
broken (around 3.5?) due to dependency refactoring.

If the object provides no ``__parent__`` then an ILocation adapter
lookup will be performed. This will always succeed as zope.location
provides a default LocationProxy for everything, but more specific
ILocation adapters can also be provided.

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

- Remove use of ``zope.testing.doctestunit`` in favor of stdlib's doctest.

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

- Avoid testing dependencies on ``zope.securitypolicies`` and
``zope.principalregistry``.