message: Set cursor blink to off by default. It was hanging jest.
diff: @@ -235,7 +235,7 @@ export class Emulator implements EmulatorApi {
  private _params = new ControlSequenceParameters();
  private _blinkIntervalId: null | number = null;
  private lines: LineImpl[] = [];
  - private cursorBlink: boolean = true;
  + private cursorBlink: boolean = false;
  debug: boolean;
  private applicationModeCookie: string;
  