Show Nim: Use Nim code from other languages (genny + pixie-python)

[carterza]

I don't even think Go uses system threads it's all green threads. You could 
probably use CPS or closure iterators to simulate what go does but I guess 
you're trying to generate Go code from Nim? I'm not really sure - I don't know 
much about this project. I just wanted to make the distinction that Golang is 
not multithreaded in the traditional sense like Nim - it only allows users to 
work with green (software) threads and not system threads.