Don't blow away entire project when saving - only remove stale files. Fixes #143.
Don't blow away entire project when saving - only remove stale files. Fixes #143.

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