Update summary in no particular order:

Protocol Specific:
 - Upgraded to WA 1.5
 - Fixed previews in images
 - Pass pongs to upper layers
 - Add chatstate support (typing/ paused), thanks to galmeida
 - Added support for send/recv location, thanks to felix-dumit
 - Added support for send/recv vcards, thanks to uelhav
 - Added potential fix for not receiving registratio sms
 - Ack notifications

Core:
 - Write date to socket as they come, thanks to galmeida
 - Parallels layers now get events sent by siblings
 - Broadcast event on login

yowsup-cli/ demos:
 - Added send typing/paused state to cli demo
 - Echo demo now echoes images, thanks to felix-dumit
 - Echo demo now echoes vcards, thanks to uelhav
 - Fixed readline/pyreadline dependency problem

Minor bug fixes

yowsup 2.0

Legacy yowsup 0.90