Changed defense to defense_bonus. Addded range_bonus to info bar.
Added tile attribute range_bonus. Changed defense to defense_bonus.
Changed atk_range to max_atk_range.
Added is_tile_in_range function. Changed get atk_range to max_atk_range. Added damage not 0 check to get_damage. Changed positions_in_range to use is_tile_in_range.
Fixed merge problem.