jGUI 0.4.1

jGUIBar: bug fixes include texture based on transition threshold not
goal ratio threshold, multiple joint span functionality, gaining
functionality, extended property to joints. Known bugs: gaining always
defaults to the end joint.
jGUICheckBox: fixed a bug where the value was always false. Created the
value getter property.
Created jGUISwayObject, untested

Also, XMLManager created for saving all types of data packages