Z3c.form

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

- Fix ``FieldWidgets.copy()``. It was broken since ``SelectionManager`` was
reimplemented using ``OrderedDict``.

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

- Add support for Python 3.7.

- Deal with items with same name but different values in ordered field widget.
[rodfersou]

- Move homegrown Manager implementation to ``OrderedDict``.
[tomgross]

- Adapt tests to ``lxml >= 4.2``, ``zope.configuration >= 4.3`` and
``zope.schema >= 4.7``.

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

- Upgrade the major version 4 to reflect the breaking changes in 3.3.0.

3.3.0 besides cherry-picks.)
Fixes: https://github.com/zopefoundation/z3c.form/issues/41

- Host documentation at https://z3cform.readthedocs.io

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

- Add support for Python 3.6.

- Drop support for Python 3.3.

- Avoid duplicated IDs when using a non-required field with
``z3c.formwidget.query.widget.QuerySourceRadioWidget``.
[pgrunewald]

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

- Drop support for Python 2.6.

- Support Python 3.5 officially.

- Fix TypeError: object of type 'generator' has no ``len()``.
Happens with z3c.formwidget.query. [maurits]

- Turned ``items`` into a property again on all widgets.
For the select widget it was a method since 2.9.0.
For the radio and checkbox widgets it was a method since 3.2.10.
For orderedselect and multi it was always a property.
Fixes https://github.com/zopefoundation/z3c.form/issues/44
[maurits]

- Fix handling of missing terms in collections. (See version 2.9 describing
this feature.)

- Fix ``orderedselect_input.js`` resource to be usable on browser layers which
do not extend ``zope.publisher.interfaces.browser.IDefaultBrowserLayer``.