Added kumaraswamy distribution
Added kumaraswamy distribution

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