message: Use Z instead of +00:00 in date("ATOM") filter
diff: @@ -2,7 +2,7 @@ import { format } from "../deps/date.js";
  import { merge } from "../utils.js";
  const formats = new Map([
  - ["ATOM", "yyyy-MM-dd'T'HH:mm:ssxxx"],
  + ["ATOM", "yyyy-MM-dd'T'HH:mm:ssXXX"],
  ["DATE", "yyyy-MM-dd"],
  ["DATETIME", "yyyy-MM-dd HH:mm:ss"],
  ["TIME", "HH:mm:ss"],
  