upping the version to 5.0.1 to fix release vs. source problem

setting the version to 5.0.0

fix compile issues on clang

upping the major version. lots of small (incompatible) changes, and t…

…he addition of int64 support.

setting the version to 3.0.0

setting the version to 2.2.0

setting the version to 2.1.0

clean up visual studio printing

improve setversion script. set version 2.0.1