add now about the upcoming release supporting zero for grid primary key values (e.g. for sqlite)
add now about the upcoming release supporting zero for grid primary key values (e.g. for sqlite)

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