EzGUIManager removed => EzGUI mainframe moved into EzDialog class (for use in scripts)
VarEditor stores some state information as instance fields, adds new one "name visible" (in the GUI)
new: Var.{is/set}ReferenceAllowed allows or forbids a variable from referencing another one
new: vars.lang.VarTrigger / vars.gui.swing.Button: a button that increments a variable and triggers valueChanged events
Added VarTrigger.trigger() and reset() methods