general:
- better error handling
- documentation
- use Python 2.3 features for IDN, stringprep and Unicode normalization 
  (drop python 2.2 support?)

xmpp-base:
- jabber:server stream support (including diallback)

xmpp-im:
- privacy lists

other:
- jabber:component stream support
- Data Forms (JEP-4)
- jabber:iq:register (legacy in-band registration)
- jabber:iq:search
