All changes in the package are documented in the main repository. See: https://github.com/ckeditor/ckeditor5/blob/master/CHANGELOG.md.
Changes for the past releases are available below.
SpecialCharactersNavigationView is an instance of the FormHeaderView and unnecessary SpecialCharactersNavigationView#labelView was removed.SpecialCharactersNavigationView an instance of the new FormHeaderView UI. See ckeditor/ckeditor5#6109. (342a536)FormHeaderView component. See ckeditor/ckeditor5#6586. (d20907a)The initial release.