Removed matrix multiplication through armadillo.

Instead use the fact that we know what happens to the individual
elements. This is also more computationally effective.
Added fields for temp coors k and l.
Found huge error where fabs wasnt used when checking max element.
Added different t expression, why?
Added field for max element and function signature for finding it.
Removed dependence on helper functions.

Now, coors also will be correct when fetched. Stored as fields in the
class.
In process of fixing jacobi algorithm.