(m) Dynamic Polyline

/////soon//////

inspired:

http://www.cad-addict.com/2009/09/sketchup-plugin-draw-polylines-bezier.html

http://archicad-talk.graphisoft.com/viewtopic.php?p=73377&highlight=polyline+edit#73377

http://www.grasshopper3d.com/forum/topics/perimeter-sort

http://morphocode.com/work/research/rhino-grasshopper-spinning-sheet/

http://www.grasshopper3d.com/forum/topics/split-closed-polyline