Release 3.1

Release notes:

* Added Callback support. This is an easier way to handle input messages, as the function you specify as a callback for a type will be.. called back automatically when a message of this type is received. You don't need to call GetData1, GetType, etc anymore, the data is available in your function's parameters.

* Corrected bugs on running status and thru.

Posted by Francois BEST 2011-05-06