!publish! some podcast feed work

layouts/section/interview.rss.xml

@@ -1,13 +1,7 @@
 {{ "<?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/"
-     xmlns:dc="http://purl.org/dc/elements/1.1/"
-     xmlns:atom="http://www.w3.org/2005/Atom"
-     xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
-     xmlns:slash="http://purl.org/rss/1.0/modules/slash/"
+     xmlns:podcast="https://podcastindex.org/namespace/1.0"
      xmlns:itunes="http://www.itunes.com/dtds/podcast-1.0.dtd"
-     xmlns:media="http://search.yahoo.com/mrss/"
      xmlns:googleplay="http://www.google.com/schemas/play-podcasts/1.0"
     >
   <channel>