* [CAM] fix biggest performance problems in ramp dressup
key items:
- finding the index of the current edge with edeges.index(edge) was very
expensive; fixed by tracking the index while looping
- checking which edges were rapids with edge equality was also
expensive; fixed by keeping a list of indexes of rapid input edges,
and tagging output edges with whether or not they are rapids
* [CAM] comment out Path.Log.debug in hot segments of ramping code
Even when low level logs are supposed to be suppressed, Path.Log.debug
takes take invoking traceback.extract_stack. This time adds up if logs
are invoked in frequently run loops.
* Fix CAM test
* [CAM] reimplment ramp method 1 with faster code
* [CAM] reimplement ramp methods 2, 3, and helix
* [CAM] patch to make output match original
* [CAM] ramping full performance + functionality fix
