Obi Rope GC allocation

[tazcebula]

Hi Taz,

The last version already saw pretty big improvements in allocation. Right now it should only allocate a very small amount every frame, and a larger amount when the lenght of the rope increases the first time.

We'll are looking into achieving zero allocation during most frames, but we still don't know if it will make it into the next release.

cheers,

great news thanks bro, look forward to it