Version XXX:
2017-0X-XX  Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
    * New parsers/serialisers:
        - Stanza error, as per RFC 6120 §8.3.
    * Incompatible changes:
        - Presence has got an overhaul, it now hosts show, statuses and
          priority in its struct.  The status module has also been
          dropped.
        - Iq now gets a proper StanzaError when the type is error.

Version 0.1.0:
2017-04-29  Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
    * Implement many extensions.