* Support passing multiple models as arguments to ``type()``, ``not_type()``, ``exact_type()`` and ``not_exact_type()`` methods on ``PageQuerySet`` (Andy Babic)
The rules for determining whether a StreamField is required (i.e. at least one block must be provided) have been simplified and made consistent with other field types. Non-required fields are now indicated by ``blank=True`` on the ``StreamField`` definition; the default is ``blank=False`` (the field is required). In previous versions, to make a field non-required, it was necessary to define :ref:`a top-level StreamBlock<streamfield_top_level_streamblock>` with ``required=False`` (which applied the validation rule) as well as setting ``blank=True`` (which removed the asterisk from the form field). You should review your use of StreamField to check that ``blank=True`` is used on the fields you wish to make optional.
Setting menu items now use SVG icons by default. For sites reusing built-in Wagtail icons, no changes should be required. For sites using custom font icons, update the menu items’ definition to use the ``classnames`` attribute:
