[Chicken-users] Cyclone

[Josh Barrett]

http://justinethier.github.io/cyclone/

It's another scheme, with Cheney-on-the-mta, and native threads. 

While not directly portable, we may want to see if we can implement a similar native thread strategy for Chicken. 

Implementing threading on Chicken will obviously be hard (or we would have done it already), it may help to see how another, comparatively similar scheme does it

Either way, it's worth studying.