As I'm the only code contributor, I'm announcing that URTrator code
is now licensed under MIT license.
Also I'm deprecating Qt5 interface as it is really hard to write Qt
code and create installers with it. Maybe one day I even figure out
how to work with QtQuick (which attracts me more and more ATM) and
URTrator will use it, but not now.
Now we have pooler which will pool connections (like pinging),
so there will be no timeouts due to "we have launched 100000 goroutines".
Reworked all code to use events (see Eventer). Still more work about
this to go.
Maybe more fixes I forgot.
