added documentation. optimized a few functions.
added documentation. optimized a few functions.

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