Do not show internal messages in list widget
PingPongWidget is now able to send Proxy Pings
Add LICENSE file via addalicense.com
Display the actual error when connecting to the serial port fails
Allow setting the serial port path by hand - needed for Linux/OS X
Update requirements, split off Windows-specific stuff
Set Mac OS X dock icon
PEP8 & Cleanup
Implement new buffering system
Whoops
Start with message number 1
Fix
Fix more nonsense
Make sure to close the serial port on application exit

I think this caused lots of problems on my MacBook - the bluetooth device
sometimes completely froze and could only be fixed with a reboot and SMC/PRAM
reset
Add sleep() in serial writer to avoid lost messages on startup
Remove leftovers
Fix Exception on Windows
Merge branch 'new-buffer-system'
serial_port_dialog: Fix last used port on systems that can’t list COM ports
Merge branch 'master' into parameters-widget

Conflicts:
	gui/main_window.py