message: Make options in Item#update optional
diff: @@ -117,7 +117,7 @@ declare class Item<D extends Item.Data = Item.Data<any>> extends Entity<D> {
  /* -------------------------------------------- */
  /** @override */
  - update (data: Optional<D>, options: Entity.UpdateOptions): Promise<this>
  + update (data: Optional<D>, options?: Entity.UpdateOptions): Promise<this>
  /** @override */
  delete (options?: Entity.DeleteOptions): Promise<Item>
  