Don't crash if trying to check targets outside the map.
Add squad and quantisation support to AirstrikePower.
CarpetBomb -> AttackBomber.
Fix GravityBomb explosion position.
Change the C&C Airstrike to be more support than sniper.

Slight buff to total damage dealt, but no longer 1-shots buildings.
Add contrails to C17 too.
Add strafing to C&C airstrike.