====================
- 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, 2.5 and pypy.
- Add support for Python 3.3.
- Wrap ``with interaction()`` in try/finally.
- Don't guess the content type with 304 responses which MUST NOT /
SHOULD NOT include it according to:
http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.htmlsec10.3.5
Unfortunately, the content type will still be guessed if the result is
set before the status.