message: Make Travis an ounce happier
diff: @@ -18,7 +18,7 @@ import { SettingLevel } from "./SettingLevel";
  export type CallbackFn = (changedInRoomId: string, atLevel: SettingLevel, newValAtLevel: any) => void;
  -const IRRELEVANT_ROOM = String(null);
  +const IRRELEVANT_ROOM: string = null;
  interface RoomWatcherMap {
  [roomId: string]: CallbackFn[];
  