Changes

This is the first significant Clipper update in 8 years
- Much of the library has been rewritten. It should be easier to use, and a little faster, and the code should be a tad easier to follow too.
Clipper1 (ver 6.4.2 - July 2015)
- Tried and true - see Clipper1.

This is the first significant Clipper update in 8 years