Release 4.0.0

fix lots of issues
update xmlui
update example

Release 3.1

Fix known bugs

miniJVM 3.0 release

Improvement classloader unload mechanism
Update gui

ver 2.1

fix classloader and class load process

ver 2.0

Refactor jvm as an object , so easy to embed into another application. So a process can boot up more than one jvm.