Remove additional CR before EOF
Rename 'handlers' to 'out_handlers'
Remove Obsolete Code
Rename 'serial_handler' to 'in_handler'
Remove obsolete comment
Rename output handler class names to contain 'Out'
Rename some arguments for clarity
Catch OSError while opening serial port
Improve -h output (pedantry at work!)
Add info about CC2538 support and improve the readme