Add WeightedRoll class
Add WeightedRoll class

It might be of general usage, and was the only way to not have the code
live twice: once for Mix and once for MixHash

labster/rakudo,azawawi/rakudo,paultcochrane/rakudo,azawawi/rakudo,tony-o/rakudo,softmoth/rakudo,awwaiid/rakudo,samcv/rakudo,usev6/rakudo,awwaiid/rakudo,b2gills/rakudo,softmoth/rakudo,LLFourn/rakudo,paultcochrane/rakudo,rakudo/rakudo,samcv/rakudo,ab5tract/rakudo,Gnouc/rakudo,usev6/rakudo,ungrim97/rakudo,ungrim97/rakudo,ungrim97/rakudo,nbrown/rakudo,jonathanstowe/rakudo,raydiak/rakudo,zostay/rakudo,azawawi/rakudo,tbrowder/rakudo,b2gills/rakudo,dankogai/rakudo,zostay/rakudo,dankogai/rakudo,nbrown/rakudo,LLFourn/rakudo,rakudo/rakudo,Gnouc/rakudo,salortiz/rakudo,zostay/rakudo,nbrown/rakudo,jonathanstowe/rakudo,b2gills/rakudo,MasterDuke17/rakudo,Gnouc/rakudo,paultcochrane/rakudo,salortiz/rakudo,labster/rakudo,sjn/rakudo,MasterDuke17/rakudo,rakudo/rakudo,zostay/rakudo,awwaiid/rakudo,lucasbuchala/rakudo,tbrowder/rakudo,softmoth/rakudo,rakudo/rakudo,azawawi/rakudo,nbrown/rakudo,sjn/rakudo,LLFourn/rakudo,dankogai/rakudo,paultcochrane/rakudo,jonathanstowe/rakudo,labster/rakudo,rakudo/rakudo,MasterDuke17/rakudo,LLFourn/rakudo,cognominal/rakudo,lucasbuchala/rakudo,b2gills/rakudo,labster/rakudo,ugexe/rakudo,samcv/rakudo,MasterDuke17/rakudo,Gnouc/rakudo,Gnouc/rakudo,softmoth/rakudo,cognominal/rakudo,paultcochrane/rakudo,ab5tract/rakudo,samcv/rakudo,samcv/rakudo,raydiak/rakudo,tbrowder/rakudo,lucasbuchala/rakudo,azawawi/rakudo,tony-o/rakudo,sjn/rakudo,nbrown/rakudo,usev6/rakudo,labster/rakudo,sjn/rakudo,tbrowder/rakudo,jonathanstowe/rakudo,Gnouc/rakudo,softmoth/rakudo,raydiak/rakudo,awwaiid/rakudo,MasterDuke17/rakudo,salortiz/rakudo,tony-o/rakudo,ab5tract/rakudo,salortiz/rakudo,ungrim97/rakudo,lucasbuchala/rakudo,labster/rakudo,dankogai/rakudo,LLFourn/rakudo,nbrown/rakudo,dankogai/rakudo,sjn/rakudo,salortiz/rakudo,tbrowder/rakudo,tony-o/rakudo,ab5tract/rakudo,tbrowder/rakudo,jonathanstowe/rakudo,b2gills/rakudo,ugexe/rakudo,ab5tract/rakudo,MasterDuke17/rakudo,salortiz/rakudo,cognominal/rakudo,tony-o/rakudo,raydiak/rakudo,ungrim97/rakudo,usev6/rakudo,ugexe/rakudo,usev6/rakudo,lucasbuchala/rakudo,rakudo/rakudo,tony-o/rakudo,ugexe/rakudo,cognominal/rakudo,cognominal/rakudo,awwaiid/rakudo,ugexe/rakudo