Legend - Type List - Updates
ImprovementTypes:
-1 = NO_IMPROVEMENT
0 = IMPROVEMENT_LAND_WORKED
1 = IMPROVEMENT_WATER_WORKED
2 = IMPROVEMENT_CITY_RUINS
3 = IMPROVEMENT_GOODY_HUT
4 = IMPROVEMENT_GOODY_HUT2
5 = IMPROVEMENT_FARM
6 = IMPROVEMENT_LODGE
7 = IMPROVEMENT_MINE