* first fix to start branch PR
* explicit conversion from sizet to int
* Array.h and DiagonalMatrix.h
* many sizet to int conversions
* removed some unused variables and added expl overrides
* removed many unused parameters
* more typing
* even more
* last of the easy changes
* fixes mac errors and warnings; check on TODO items
* renamed function as override was not of virtual
* removed another using
* experimental adjustment
* move fcDot to public
* renaming things
* Replace int by size_t in for loops.
* Various dtor missing and some other warning fixes.
* fixed size_t vs int
* fixed size_t vs int
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Co-authored-by: Paddle <PaddleStroke@users.noreply.github.com>
Co-authored-by: Aik-Siong Koh <askoh@askoh.com>
