Features

• transformSets() will now return a Map instance linking transformed operations to the original operations. (61da3ec)
• Brought support for RTL content in the bindTwoStepCaretToAttribute() helper. See ckeditor/ckeditor5#1151. (d57ff5a)
• Introduced model.Differ#refreshItem(). (7dc8710)
• Introduced the is() method to additional objects from the model and view realms. Closes #1667. (89dbe43)

Bug fixes

• Fixed problem with handling very large text nodes. (a7ae813)
• Prevented Differ crashing in some scenarios involving attribute changes on elements. Closes #1764. (482e55e)

Other changes

• Add unwrapElement() method to UpcastWriter. (9e97196)
• Allowed for unbinding single elements from a marker name in Mapper. Closes #1758. (52e701d)
• The issue tracker for this package was moved to https://github.com/ckeditor/ckeditor5/issues. See ckeditor/ckeditor5#1988. (6ed94c6)
• Introduced automatic marker re-rendering during conversion for markers which view element was unbound. Closes #1780. (5661fb6)
• Position getters (such as #parent or #index) will throw when position points at an incorrect place in its root. Closes #1776. (a359866)

BREAKING CHANGES

• New parameter introduced in DowncastDispatcher#convertChanges(). Now it is convertChanges( differ, markers, writer ).
• Although it was rather impossible to use DowncastDispatcher without specifying any conversion API in the constructor, now it is a required parameter.
• The bindTwoStepCaretToAttribute() helper arguments syntax has changed (replaced by an object). Please refer to the helper documentation to learn more.
• Mapper#unbindElementsFromMarkerName( markerName ) was replaced by Mapper#unbindElementFromMarkerName( element, markerName ).