Version 1.2 - All New!

Complete overhaul. Many bugs fixed. Code cleaned up and made more consistent. Better commenting. Detailed testing still required.

Some features removed. ConstFFUN and ConstGFUN are now only 'yes' or 'no'. Too tricky to maintain and not worth it.

sdearguments_special() renamed to sdearguments_process().

Three new private functions to clean up and break up sdearguments() stuff.

New sde_isdiag() private function to detect diagonal square matrices. Second argument can be used to find if diagonal on any band.

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