also check for duplicate node-mapnik
also check for duplicate node-mapnik

fxtentacle/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,mbrukman/tilemill,nyimbi/tilemill,Zhao-Qi/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,paulovieira/tilemill-clima,Teino1978-Corp/Teino1978-Corp-tilemill,tilemill-project/tilemill,florianf/tileoven,paulovieira/tilemill-clima,mbrukman/tilemill,Zhao-Qi/tilemill,tizzybec/tilemill,fxtentacle/tilemill,MappingKat/tilemill,paulovieira/tilemill-clima,Zhao-Qi/tilemill,mbrukman/tilemill,nyimbi/tilemill,MappingKat/tilemill,tizzybec/tilemill,mbrukman/tilemill,florianf/tileoven,MappingKat/tilemill,Zhao-Qi/tilemill,mbrukman/tilemill,nyimbi/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,MappingKat/tilemill,fxtentacle/tilemill,Zhao-Qi/tilemill,paulovieira/tilemill-clima,tizzybec/tilemill,florianf/tileoven,tilemill-project/tilemill,tizzybec/tilemill,tizzybec/tilemill,fxtentacle/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,nyimbi/tilemill,nyimbi/tilemill,tilemill-project/tilemill,MappingKat/tilemill,paulovieira/tilemill-clima,fxtentacle/tilemill