In order of priority:
  - Issue a warning on too many download calls
  - Add parsing 'today/popular/historical/channel' topic lists
  - Try to replace _process_entry regexps with DOM
  - Parse author pages (detect sponsored/rookie/banned)
  - Parse AMA-type topic pages, with questions + answers
  - Make entries WWW::Eksi::Entry objects
  - Make authors WWW::Eksi::Author objects

Future:
  - login, post, vote
