================
Backward incompatible changes
-----------------------------
- Use select2 JavaScript library to nicely render the select fields.
Features
--------
- Render breadcrumbs to be able to access the parent object.
Other
-----
- Update most libraries needed for the address book to their newest versions.
- Move ``.conftest.tmpfile()`` to ``.fixtures.tmpfile()`` for reuse.
- Make some Python 3 preparations as suggested by `pylint --py3k -d W1618`.
(No checks for future-absolute-imports as relative imports are not used
here.)
- Change `zope.interface.implements[Only]` and `zope.component.adapts` to
class decorators.
- Also release as wheel.