weighted straight skeleton implementation in java.

allows negative weights for offsetting in either direction. implementation of Felkel's algo with robustness - described here.

requires jama, has a gui interface. video. enjoy.

main class is straightskeleton/debug/Main.java .

[example usage.] (https://github.com/twak/campskeleton/blob/wiki/PageName.md)

i believe i own the license to all code in this release, hasn't been vetted for a while tho, so go carefully.