Major update:
-Integrates with PsychToolbox (if installed) for low latency serial and possible future use as a sound server
-Adds sound support with Teensy Audio board, added as a hardware serial device
-Updated to work on Ubuntu 14 with MATLAB r2011a or newer (must create a serial port alias: /dev/TTYACM0 --> /dev/TTYS101)
-Added hardware serial override to GUI
-Many other bug-fixes