* Vars and EzVars can now be declared "optional"
* EzDialog: optional variables have a new check box next to them
(minor) javadoc
VarEditor now technically toolkit independent (Swing stuff fully deferred to SwingVarEditor)
Merge branch 'master' of https://github.com/adufour/EzPlug
heavy work ahead (do *NOT* use this commit, highly experimental!!). In a nutshell:
- Toolkit independent
- New slider component for ranged values
- (undecided yet) Unified call hierarchy between EzVarXXX and VarXXX (lot of deprecation ahead!)
- New VarChannel and channel picker component (shows channel name instead of number)