Added powerups and more ship AI along with varying attacks
The elite ship aims towards the player and shoots tri bullets and they work the same as normal bullets as they will despawn when they hit the ship or leave the screen
The captain ship acts the same as the grunt ships but leave mines that stay on the same spot for 10 seconds then despawn or if the player makes contact with them
I added 4 powerups
First Aid: Heals the ship completely
Rallying Cry: Double the ship's damage
Barrier: Immunity to damage for 10 seconds
Laser Beam: Fires a continuous laser that will destroy any ship (excluding bosses) upon contact and any enemy shots in it's path. The effect lasts 15 seconds.
Blue Circle: First Aid Powerup
Red Circle: Mine
Blue Circle: Rallying Cry Effect Icon
Blue Circle: Shield Powerup
Red Circle: Laser Beam Powerup
Shield and Laserbeam effect shown in tandem
