!publish! some podcast feed work

layouts/section/interview.rss.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="UTF-8" ?>
+{{ "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>" | htmlUnescape | safeHTML }}
 <rss version="2.0"
      xmlns:content="http://purl.org/rss/1.0/modules/content/"
      xmlns:wfw="http://wellformedweb.org/CommentAPI/"