Update METAOP_ZIP to honor associativity of the base operator. Fixes Z, (RT #113800) and some other issues.
Update METAOP_ZIP to honor associativity of the base operator.
Fixes Z, (RT #113800) and some other issues.

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