message: Add !unplumb alias
diff: @@ -167,6 +167,7 @@ export class AdminRoomHandler {
  response = await this.handlePlumb(args, event.sender, userPermission)
  break;
  case "!unlink":
  + case "!unplumb": // alias for convinience
  response = await this.handleUnlink(args, event.sender, userPermission)
  break;
  case "!help":
  