### Selection events test [#603](https://github.com/ckeditor/ckeditor5-engine/issues/603) Test that each selection change fires: * only one `change:range` for position change. * only one `change:attribute` for attribute(s) change (if anything has changed). Test following ways of changing selection: * clicking in various positions, * arrow keys, * applying styles, * enter and backspace keys, * typing.