It was recently brought to my attention that my old wooly paths definition no longer works with the latest version of Grasshopper (0.9+) so I thought I'd take the opportunity to include some improvements in the update which you can grab here.
For one, paths now have bending resistance which helps considerably avoid tangling. Attractive forces between threads have also been reworked in an effort to keep positive feedback in check. Hopefully explosive spaghetti is a problem of the past. If anyone stumbles upon any bugs let me know and I'll do my best to exterminate.