Fix map/filter Subscribable combinators.
Fix map/filter Subscribable combinators.

usev6/rakudo,retupmoca/rakudo,zhuomingliang/rakudo,dankogai/rakudo,retupmoca/rakudo,cygx/rakudo,nbrown/rakudo,LLFourn/rakudo,salortiz/rakudo,zhuomingliang/rakudo,skids/rakudo,dankogai/rakudo,jonathanstowe/rakudo,samcv/rakudo,MasterDuke17/rakudo,b2gills/rakudo,ungrim97/rakudo,usev6/rakudo,awwaiid/rakudo,Leont/rakudo,sjn/rakudo,niner/rakudo,paultcochrane/rakudo,tbrowder/rakudo,teodozjan/rakudo,sergot/rakudo,nbrown/rakudo,tony-o/deb-rakudodaily,tony-o/deb-rakudodaily,tony-o/rakudo,zhuomingliang/rakudo,Gnouc/rakudo,teodozjan/rakudo,rakudo/rakudo,dwarring/rakudo,niner/rakudo,retupmoca/rakudo,ugexe/rakudo,jonathanstowe/rakudo,tony-o/deb-rakudodaily,azawawi/rakudo,cognominal/rakudo,retupmoca/rakudo,dwarring/rakudo,softmoth/rakudo,zostay/rakudo,b2gills/rakudo,raydiak/rakudo,ugexe/rakudo,samcv/rakudo,cygx/rakudo,tony-o/deb-rakudodaily,tony-o/deb-rakudodaily,rakudo/rakudo,tony-o/deb-rakudodaily,ungrim97/rakudo,nunorc/rakudo,azawawi/rakudo,sergot/rakudo,zostay/rakudo,MasterDuke17/rakudo,cognominal/rakudo,cognominal/rakudo,tony-o/rakudo,MasterDuke17/rakudo,lucasbuchala/rakudo,tbrowder/rakudo,ab5tract/rakudo,b2gills/rakudo,paultcochrane/rakudo,rakudo/rakudo,cognominal/rakudo,nbrown/rakudo,tony-o/rakudo,sjn/rakudo,dankogai/rakudo,dankogai/rakudo,cygx/rakudo,samcv/rakudo,salortiz/rakudo,LLFourn/rakudo,b2gills/rakudo,labster/rakudo,softmoth/rakudo,jonathanstowe/rakudo,tbrowder/rakudo,jonathanstowe/rakudo,tony-o/rakudo,skids/rakudo,ungrim97/rakudo,rakudo/rakudo,Leont/rakudo,ab5tract/rakudo,ugexe/rakudo,lucasbuchala/rakudo,tbrowder/rakudo,rakudo/rakudo,ugexe/rakudo,labster/rakudo,ab5tract/rakudo,sjn/rakudo,ab5tract/rakudo,skids/rakudo,paultcochrane/rakudo,azawawi/rakudo,Gnouc/rakudo,nbrown/rakudo,dwarring/rakudo,softmoth/rakudo,labster/rakudo,skids/rakudo,labster/rakudo,usev6/rakudo,teodozjan/rakudo,sjn/rakudo,tbrowder/rakudo,softmoth/rakudo,Leont/rakudo,salortiz/rakudo,laben/rakudo,cygx/rakudo,nbrown/rakudo,azawawi/rakudo,samcv/rakudo,zostay/rakudo,awwaiid/rakudo,ugexe/rakudo,laben/rakudo,ab5tract/rakudo,labster/rakudo,softmoth/rakudo,awwaiid/rakudo,dankogai/rakudo,niner/rakudo,salortiz/rakudo,nunorc/rakudo,raydiak/rakudo,teodozjan/rakudo,LLFourn/rakudo,Gnouc/rakudo,Gnouc/rakudo,salortiz/rakudo,rakudo/rakudo,tony-o/deb-rakudodaily,Gnouc/rakudo,jonathanstowe/rakudo,skids/rakudo,niner/rakudo,zostay/rakudo,dwarring/rakudo,sergot/rakudo,nbrown/rakudo,Gnouc/rakudo,salortiz/rakudo,awwaiid/rakudo,nunorc/rakudo,laben/rakudo,azawawi/rakudo,laben/rakudo,usev6/rakudo,raydiak/rakudo,awwaiid/rakudo,raydiak/rakudo,nunorc/rakudo,MasterDuke17/rakudo,ungrim97/rakudo,Leont/rakudo,cygx/rakudo,sjn/rakudo,cognominal/rakudo,lucasbuchala/rakudo,tbrowder/rakudo,tony-o/rakudo,LLFourn/rakudo,lucasbuchala/rakudo,lucasbuchala/rakudo,LLFourn/rakudo,ungrim97/rakudo,labster/rakudo,MasterDuke17/rakudo,paultcochrane/rakudo,sergot/rakudo,b2gills/rakudo,MasterDuke17/rakudo,tony-o/rakudo,usev6/rakudo,zhuomingliang/rakudo,samcv/rakudo,paultcochrane/rakudo