Layer Control Dialog>Load RAW:  enabled loading of the .NII files as a layer.

Global Optimization:  "BiGauss Histogram Split" cost function, changed the calculation arrangement to improve the speed of calculation\convergence about x2.  In interval math, the
Square(A)/Square(B)  should be replaced instead with Square(A/B) for better convergence (A,B are intervals).

Global Optimization framework:  improved the memory handling so only a single generation is stored for one split iteration, reducing memory by x2