Fixed a bug in biarc approximation where Hausdorff distance was
incorrectly calculated. Needless curve subdivisions are almost
eliminated.
Moved to lib.
Cleaned up a bit.
Added checks to reduce redundant modal G code.
minor fixes/cleanups
Added brush options.
minor refactoring.
Added trajectory plan mode & tolerance properties
added optional clip-to-margin clip-to-doc for segments and polygons
refactor & cleanup, better preview & brush support
new