Added 4D specializations for Point, Vector, and Bounds (tesseracts).
Added unit tests for Point4, Vector4, and Bounds4.

The Bounds2_getValues test was missing, and the Bounds3_getValues test was using
a hardcoded value for the size of the array. Both issues have been fixed

Adjusted the "FAST_SQRT_ERROR" constant from 0.0005 to 0.0017
Removed excess whitespace