Plone.app.z3cform

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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)

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New features:


- Use label_css_class attribute from widget if available in checkbox_input & radio_input
[MrTango] (202)

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New features:


- Add support for the "accept" attribute on file inputs.

If the widget's field - if there is one - has the "accept" attribute set (the
`NamedImage` field has `image/*` set by default) then this is rendered as an
`accept` attribute on the file input.

This would restrict the allowed file types before uploading while still being
checked on the server side.

Fixes: https://github.com/plone/plone.formwidget.namedfile/issues/66
Depends on:
- https://github.com/plone/plone.namedfile/pull/158
- https://github.com/plone/plone.formwidget.namedfile/pull/67
[thet] (198)


Bug fixes:


- Fix `SelectFieldWidget` factory call.
[petschki] (192)