NEW/CHANGED FEATURES:
- Added new option to handle Form Feed (FF, ASCII code 12) characters. When enabled, the reception of a FF character will clear the receive buffer and thus clear the screen.
 - Added new option to handle End Of Text (EOT, ASCII code 4) characters. Enabling this feature will prevent the display from updating until a EOT character is received, at which time the display is updated with the contents from the receive buffer.
 - Added code to present the user with the option to select a serial port if a loaded settings file includes an empty string for the port name. This allows the creation of generic settings files.
 - [MAC] Additional retina support.
 
BUG FIXES AND STABILITY IMRPOVEMENTS
- Code improvement to avoid ThreadAccessingUIException
 
