func tableView(_ tableView: UITableView,
                   cellForRowAt indexPath: IndexPath) -> UITableViewCell
    {

        let party = parties[indexPath.row]
        let cell = tableView.dequeueReusableCell(withIdentifier: "PartyCell",
                                                 for: indexPath) as! PartyCell

        cell.nameLabel.text = party.value(forKeyPath: "name") as? String
        cell.sizeLabel.text = party.value(forKeyPath: "size") as? String
        cell.contactLabel.text = party.value(forKeyPath: "contact") as? String
        cell.locationLabel.text = party.value(forKeyPath: "location") as? String

        return cell
    }

let cell = tableView.dequeueReusableCell(withIdentifier: "PartyCell",
                                             for: indexPath) as! PartyCell