Use new readme/changelog fields

app/handlers/feed.py

 from feedgen.feed import FeedGenerator
 
 import uuid
 import handlers
 from handlers.pager import QueryPager
 from models.package import Package
 import cherrypy
 from datetime import datetime
 
 XML_BEGIN = '<?xml version="1.0" encoding="UTF-8"?>'
@@ skipping 23 matching lines @@
             entry.title("v" + item.latest_version.pubspec.get("version") +\
                 " of " + item.name)
             entry.link(link={"href": "https://pub.dartlang.org/packages/" +\
                 item.name, "rel": "alternate", "title": item.name})
             entry.id(uuid.uuid5(uuid.NAMESPACE_URL,
                 ("https://pub.dartlang.org/packages/" + item.name + "#" +\
                 item.latest_version.pubspec.get("version")).encode('utf-8')).urn)
             entry.description(
                 item.latest_version.pubspec
                 .get("description", "Not Available"))
-            readme = item.latest_version.readme
-            if not readme is None:
-                entry.content(item.latest_version.readme.render(), type='html')
+            readme = item.latest_version.readme_obj
+            if readme is not None:
+                entry.content(readme.render(), type='html')
             else:
                 entry.content("<p>No README Found</p>", type='html')
         return feed
 
     def atom(self, page=1):
         cherrypy.response.headers['Content-Type'] = "application/atom+xml"
         return XML_BEGIN + "\n" +\
             self.generate_feed(page=page).atom_str(pretty=True)