Removed extraneous message listeners, added @Resource annotation to
classes which should be treated as singletons, added listeners to
intercept outgoing StampyMessages & string messages.
Made StompMessageTypes a static array.
Implemented auto shutdown
Fixed heartbeat determination:

The first number represents what the sender of the frame can do
(outgoing heart-beats):
0 means it cannot send heart-beats
otherwise it is the smallest number of milliseconds between heart-beats
that it can guarantee
The second number represents what the sender of the frame would like to
get (incoming heart-beats):
0 means it does not want to receive heart-beats
otherwise it is the desired number of milliseconds between heart-beats
added logging
Added login and transaction control classes.
Made adapter extension anonymous inner class.
Made message method validate() public to facilitate validation upon
message receipt, added version listener
Renamed exception
Created mina source folder for Apache MINA implementation