start() {
    if (this.typingComplete) return;
    if (!this.pause.status) return;
    this.pause.status = false;
    if (this.pause.typewrite) {
      this.typewrite(this.pause.curString, this.pause.curStrPos);
    } else {
      this.backspace(this.pause.curString, this.pause.curStrPos);
    }
    this.options.onStart(this.arrayPos, this);
  }
Start typing / backspacing after being stopped
@public