upgrade to node-mapnik 3.2.0 release
upgrade to node-mapnik 3.2.0 release

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