Compiling C++ nodes and Scriptnode Networks

[oskarsh]

@HISEnberg I can second this feature.

Checking which network to compile would be such a time saver

[d.healey]

@HISEnberg I also think it's a good idea, often when debugging issues the problem is just with a single network, but if you have lots of networks you have to keep recompiling to test them and using a check box instead of having to shuffle xml files around would be much nicer.

[ulrik]

@HISEnberg I agree