Same as Identity and ScaledIdentity, but returns a mat64.Dense instead
of mat64.SymDense. Also in this change is the return of a concrete
instead of interface (as per go best practice).
Coverage increased (+0.04%) to 96.701% when pulling 3a97dba1618d2d4d3b6a8e3214a510dea8b8393a on issue-29 into 81a973f9453ef13c058df805ed79c7446db4c4a2 on master.
Same as Identity and ScaledIdentity, but returns a mat64.Dense instead of mat64.SymDense. Also in this change is the return of a concrete instead of interface (as per go best practice).
Closes #29 .