JavaSim 2.2.0 GA release

Some minor updates from 2.1.0 GA

Official 2.1 GA (Final) release.

General improvements since the 2.0 release.

First official 2.0 release.

The first official release since the move to github.

Official 0.3.1 GA (Final) release.

Imported release to github. Very old version so may not work on more recent Java releases. Built with JDK 1.4.