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New features:
- Add `sort` feature to resort all folder items
[petschki] (812)
- Remove unneeded stringtype checks
[erral] (875)
Bug fixes:
- Fixed deprecation warnings for ``zope.site.hooks``, ``CMFPlone.interfaces.ILanguageSchema``
and ``plone.dexterity.utils.splitSchemaName``.
[maurits] (975)
- Update tests to fix https://github.com/plone/plone.dexterity/pull/137
[avoinea] (1001)
- Fix tests with Products.MailHost 4.10.
[maurits] (3178)