Implemented numerous matrix operations, some refactoring
Implemented numerous matrix operations, some refactoring

jstat/jstat,smarden1/jstat,ggonzale/jstat,JeebsM/jstat,jamescgibson/jstat,ggonzale/jstat,JeebsM/jstat,jstat/jstat,cmpolis/jstat,NorthDecoder/jstat,akrawitz/jstat,smarden1/jstat,NorthDecoder/jstat,akrawitz/jstat