*** Added initial Top-Down Shooter example and related pieces
* Added Shooter example
* Added Shooter example to website
* Added moved, rotated, and zoomed EventDelegates to Camera class
* MouseAdapter now knows about when the attached camera moves, rotates, or zooms, and updates associated mouse data
* Added getMtv() function to LinearSG (!needs to be back-ported into ISceneGraph)
* Added static class Util.Timing with tools for getting the current application time, using high precision if available