File modification time is affected by any write, not just significant
changes as the specs demand. As some readers show only updated in
overviews, prefer the stable creation date for now, disregarding any
later edits.
<link href="/<?= $article->link ?>" />
<title><?= $article->title ?></title>
<published><?= $article->dateiso ?></published>
- <updated><?= $article->lastiso ?></updated>
+ <updated><?= $article->dateiso ?></updated>
<content type="html"><?= htmlspecialchars($article->body) ?></content>
<?php
if ($article->thumb) {