Various typing and API fixes, doc comments, typing test etc.

src/Types.ts

@@ -182,14 +182,6 @@ export interface IInputHandler {
       ESC ~ */ setgLevel(level: number): void;
 }
 
-/*
- * An InputHandler for VT-style terminals
- */
-export interface IVtInputHandler extends IInputHandler {
-  addCsiHandler(flag: string, callback: (params: number[], collect: string) => boolean): IDisposable;
-  addOscHandler(ident: number, callback: (data: string) => boolean): IDisposable;
-}
-
 export interface ILinkMatcher {
   id: number;
   regex: RegExp;