Fixed `arc` and `arcT` so they are always CCW.#56

Merged

byorgey merged 4 commits intodiagrams:masterfrom fryguybob:arc-enhancements

Nov 2, 2012

+88-2

Commits on Oct 30, 2012

Commits on Oct 31, 2012

Jump directly to the correct ccw wraparound with arcT.
fryguybob
committed