Daemon mode -- keep a pidfile, and check the mtime of the state file to avoid
having to reread it.

Option to disable flocking

Fix rawdog -a https://www.fsf.org/blogs/rms/

Somewhere safe for plugins to persist data...

--change-feed-url option to change feed URL without losing articles

Look at Expires header to automatically select "periods"

FIXME: redo sorting hack in feedparser.

- Longer-term future: split features out to plugins
  - refresh header
  - HTML4 output
  - removing duplicate articles
  - DayWriter
  - mx.Tidy
  - proxy auth
  - per-feed proxies
  - length limiting in templates
  - mx.Tidy flag to output xhtml
  - nuke future pubDates (Rick van Rein)
- And new features to write as plugins
  - sort by feeds first (should work since sort is stable)

- Article numbering (probably not)

- Ctrl-C shouldn't print the "error loading" warning.

If rawdog crashes while updating a feed, it shouldn't forget the feeds it's
already updated. Perhaps have an exception handler that keeps a safety copy of
the state file and saves where it's got to so far?

Improve efficiency -- memoise stuff before comparing articles.

__comments__ from the feed (and anything else worth having?).

Option to choose whether full content or summary is preferred.

Review expiry logic: is maxage=0 the same as currentonly?

Plugin that gets run on new articles.

OPML listing -- needs feed type.
Do for now as separate program once config parser separate.

Error reporting as feed (or as separate display?) (Dorward)

RSS output. raymond@dotsphinx.com

Feed schedule spreading.

Timeouts should be ignored unless it's been getting timeouts for more than a
configurable amount of time.

Add a needs_update() method to Feed; make Rawdog call that on all the feeds
(when not being forced) and then call update() on each of them that needs it.

For rawdog 3:
- generalise templating (so the show template option takes a name, etc.)
- require Python 2.3
  - use unicode.encode('ascii','xmlcharrefreplace') if possible?
  - "for line in file"
  - "item in dict"
- include author in article hash

Abandoned:
- __feednumber_mod_N__ (for easier default styles, i.e. _mod_4 counts 0-3,0-3)
  (didn't really work for lots of feeds)