0.1.3 has been released. OptionsBox support has now been completely tested and debugged, and all widgets from ROX-Lib2 have been implemented, with minor differences.
Nested sections do not nest; all sections are displayed as notebook tabs on the master GtkNotebook for the dialog. ColourButtons don't display the colour on the button, as I've been having difficulty implementing this.
All other features work, and the documentation has been updated. Start playing with this -- it's a powerful feature of librox-perl.