Use 16 bits pillow converter instead of python one
Use 16 bits pillow converter instead of python one

Greatly reduce the time needed to read .map files.

Ketchu13/7DTD-leaflet,robhol/7DTD-leaflet,Ketchu13/7DTD-leaflet,nicolas-f/7DTD-leaflet,robhol/7DTD-leaflet,Ketchu13/7DTD-leaflet,robhol/7DTD-leaflet,nicolas-f/7DTD-leaflet,nicolas-f/7DTD-leaflet