Added width/height values to pixel buffer
Added pixel coords to Ray
Parallel Ray Tracer now hands off tracing to worker tracers
Fixed a missing set of parameters in PinholeCamera
Fixed Color.rgb32() to write out in argb form (as used by Swing)
ShadingData now can store intersection data and a root surface
Added missing parameters to a new Ray() call in MatrixTransformSurface
Added some basic shapes (plane, sphere) to TestScene1