Greatly simplified and improved parameter generation.

Uniform parameter calculated directly with no optimization.

In non-uniform case if if the alpha-nu condition that keep the elements of rho positive is no met, then fzero is used once per instance to recalculate nu. Then alpha is calculated again for these values.

Code cleaned up and simplified.

New private function to convert from nu representation to gamma delta representation.

Signed-off-by: Andrew D. Horchler <adh9@case.edu>