Added types for caretPosition

src/lib/@types/index.d.ts

@@ -172,6 +172,10 @@ declare module 'simple-keyboard' {
   class Keyboard {
     constructor(selector: string, options: KeyboardOptions);
     constructor(options: KeyboardOptions);
+
+    /**
+     * Options
+     */
     options: KeyboardOptions;
 
     /**
@@ -179,6 +183,11 @@ declare module 'simple-keyboard' {
      */
     utilities?: any;
 
+    /**
+     * caretPosition
+     */
+    caretPosition?: number;
+
     /**
      * Adds/Modifies an entry to the `buttonTheme`. Basically a way to add a class to a button.
      * @param  {string} buttons List of buttons to select (separated by a space).