Some cleanups and tweaks to Callable[::T].
Some cleanups and tweaks to Callable[::T].

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