NPI v0.3.0 file

NPI v0.3.0 : Contain all units from previous pack. add Royal-Artillerie 4 pounder cannon (campaign artillery); add Royal-Artillerie 8 pounder cannon (campaign artillery); add Royal-Artillerie 12 pounder cannon (campaign artillery); add Royal-Artillerie 16 pounder cannon (siege artillery); add Royal-Artillerie 8 inch mortar (siege artillery); add Royal-Artillerie 10 inch mortar (siege artillery); add Bombardiers de la Marine 12 inch cannon (siege artillery); restrict projectiles to carcass, shell and round shot to mortars ; restrict projectiles to round shot and cannister to cannons ; correct bug with Grenadiers de France (disappearing officer and flagbearer) ;