Features

• Added the observable Editor#state property. Closes #124. (ec89d8d)
• Imported the module providing the CKEDITOR_VERSION global constant in the Editor class (see ckeditor/ckeditor5#1005). (a1a9144)
• Introduced the #element property to the EditorWithUI interface. The #element property from the ElementApi interface has been renamed to #sourceElement. Most editors implement both interfaces, which ultimately means that the old editor.element property is now called editor.sourceElement and there's a new editor.element property with a new meaning. Closes #64. (eb43b63)
• Introduced the EditorUI#update event. Closes #130. (734166a)

Bug fixes

• Editor#destroy waits for the initialization. Closes #134. (ad1da26)
• The ClassicTestEditor should not render its UI in the constructor(). Closes #137. (46fdc36)

Other changes

• Refreshed the pilcrow icon (see ckeditor/ckeditor5-ui#394). (ce33acb)
• Split Editor.build into Editor.builtinPlugins and Editor.defaultConfig. Closes #140. (c13ec79)
• Updated translations. (ba21a12)

BREAKING CHANGES

• Editor.build was split to Editor.builtinPlugins and Editor.defaultConfig.
• The editor.element property was renamed to editor.sourceElement.
• The editor.updateElement() method was renamed to editor.updateSourceElement().
• The EditorUI is now a class (no longer an interface).