code: func (d Data) GetBool(key string) bool {
  	if !d.KeyExists(key) || len(d.Values[key]) == 0 {
  		return false
  	}
  	str := d.Get(key)
  	if result, err := strconv.ParseBool(str); err != nil {
  		panic(err)
  	} else {
  		return result
  	}
  }
docs: // GetBool returns the first element in data[key] converted to a bool.