module to build full-screen console-style applications

 A Tickit::Console instance is a subclass of Tickit::Widget::VBox intended to
 help building a full-screen console-style application which presents the user
 with one or more scrollable text areas, selectable as tabs on a ribbon, with
 a text entry area at the bottom of the screen for entering commands or other
 data. As a Tickit::Widget subclass it can be added anywhere within a widget
 tree, though normally it would be used as the root widget for a Tickit
 instance.