Plone.app.z3cform

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Bug fixes:


- Check for `required` on widget instead on field.
This makes it possible to override it in `updateWidgets` if you have
complex widgets inside fields.
[petschki] (221)

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Bug fixes:


- Fix deprecated `plone_settings` adapter.
[petschki] (219)

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Bug fixes:


- Fix DeprecationWarnings. [maurits] (4090)

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Bug fixes:


- Fix pattern options for `LinkWidget`.
[petschki] (213)

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New features:


- Implement new `ContentBrowserWidget` for `pat-contentbrowser` pattern.

The deprecated `RelatedItemsWidget` and `pat-relateditems` pattern is still available
and imports should not break. But the default widget and converter adapter registration for
z3c.relationfield is changed to the new widget.

Since `plone.app.relationfield` defines the widget with `plone.autoform` schema
hints nothing changes until the package is updated to the new widget.
[petschki] (197)

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Internal:


- Date/time widget: Fix data converter adaption.
Get the data converter for the date and datetime widgets via adaption and remove the _converter attribute hack.
This aligns the code to z3c.form standards and allows to override the data converter which was previously not easily possible.
[thet] (204)