just formatting
use the new reqrep method
corrected bug in the case statement
generate exceptions when the req/rep did not work correctly
abort the telemetry querying and provides a termination message when something went wrong in the communication
UI does not start if the roomba is not already up, and exits gracefully on connection lost
added a simple drawing representing the actives keys used by the controller
use the new graphic and stop correctly the getStatus thread when exiting by closing the window
Added a listener that stops the robot on lost of focus