Add Ranged Air Action Air Bomb
Air Bomb Can be performed to tiles in air_range of the actor. On tiles outside of a city, destroys improvements. On a city, lowers that city's defense bonus by bomb_rate for 5 turns.
Air Bomb Can be performed to tiles in air_range of the actor. On tiles outside of a city, destroys improvements. On a city, lowers that city's defense bonus by bomb_rate for 5 turns.