Build update

build/types/services/Utilities.d.ts

@@ -133,6 +133,10 @@ declare class Utilities {
      * @param  {boolean} moveCaret Whether to update simple-keyboard's cursor
      */
     addStringAt(source: string, str: string, position?: number, positionEnd?: number, moveCaret?: boolean): string;
+    /**
+     * Check whether the button is a standard button
+     */
+    isStandardButton: (button: string) => boolean | "";
     /**
      * Removes an amount of characters before a given position
      *