Is ORC considered production-ready? What is the consensus on its use?

[Araq]

* The "leaks" you noticed are not leaks, just bad cycle collector heuristics. 
We can change these but for now all I've seen are contrived examples.
* There are two channel implementations both of which are not "blocking".
* You can move memory under ORC and it's pretty much what 
`nim-lang/threading/channels.nim` does. (Which is what you should use btw.)