Minor changes Replace tslint with eslint; fix some violations (PR #13944 by ecraig12345) Add mutliSelectDelimiter property to ComboBox (PR #13979 by c0r32) Patches Keytip: add useKeytipRef hook. (PR #13742 by xugao) ContextualMenu: Fix high contrast style for submenu icon (PR #13843 by erichdev)