Modify jfeed to find published date as well as updated date, if available (Atom feeds only -- RSS published date is set to same as updated date). When showing feeds in preview, show the most recent of the two dates, as in some feeds (e.g. YouTube), one or other date is incorrectly set to 1 Jan 1970.
Bugfix: not all <link rel="alternate"> tags in <head> have a 'type' attribute to check against.
Builder version bump.