- see also: grep 'XXX\|FIXME\|TODO' * -r
  - lib/Net/XMPP2/Writer.pm: # XXX: removed authname, because it ensures maximum connectivitiy

- implement iq-auth!!!!

- make error callback of parser ultimately to an error object
  - use exceptions maybe?

- Net::XMPP2::Client
  - find a way to distinguish presences from JIDs that
    are in multiple account's roster.

- Net::XMPP2 missing functionality to be RFC 3920 conform:
   - add timeouts to IQs! (mostly done)
   - improve error handling for SASL to 
     support retries as specified in RFC 3920.
     (eg. by supporting a method sasl_retry() which takes
      the changed credentials)
   - SRV record lookup
      - weight handling!
   - test Net::XMPP2::Error: bind_error and stream_error (mostly done).
   - in band registration and un-registration!!!
      - finish in-band-registration XEP
      - document events
   later:
      - make dns resolution async!
      - make extensions more optional and reentrant

- Net::XMPP2::IM missing functionality to be RFC 3921 conform:
   - 7.2.  Business Rules

- Implement XEP-0004: Data Forms
   - see also: XEP-0068: Field Standardization for Data Forms

- Implement XEP-0082: XMPP Date and Time Profiles
   - util functions to convert them to unix timestamps

- Implement XEP-0115: Entity Capabilities

- Implement XEP-0045: Multi-User Chat
   - think about: make seperate MUC handler class

- Implement XEP-0190: Best Practice for Closing Idle Streams

- keep an eye on:
   - TLS: implemented, just do some extensive testing WRT blocking,
          i don't trust the current way the watchers are handled,
          i'm in fear of deadlocks...

- Implement XEP-0030: Service Discovery
   - see also: XEP-0128: Service Discovery Extensions
   - missing support multiple identities when answering requests