Gfx: Added composite stack
Bbox2: Added getLines()
Line2: Added overlaps( Bbox2 )
Deduplicated Tool classes
EditorStyle: Now abstract
EditorComponent: Added getGraphic()
Moved Tools into their own package: gui.editor.tools
EditorPanel: Updated to use ToolManager
EditorPanel: Now generates mouse motion events when cam moves.
A bit hacky.  We'll see how it plays out.
Toolbox: Now deep-copies components on creation
EditorComponent: getGraphic now returns GraphicComActive
EditorWorld: Added getExtent()
Gfx: Added drawOrientationOverlay()
Added Selection class to gui.editor.tools
ToolPlacer: Now uses alpha compositing
ToolSelector: Renamed vars for integration
ToolDragger: Spacing
Added first draft of ToolContextual, integrating drag/rotate/select
ToolManager: Progressing...