Fixed beta.cdf. Allowed some functions to run on jstat objects
Fixed beta.cdf. Allowed some functions to run on jstat objects

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