Modular Alpha Starwing

This is a heavy remix of Astrofossil's awesome Alpha Starwing. I've rebuilt it to be a bit modular. You can choose either a turret version or non-turret version for the main fuselage. The wings can be folded into an upright position. The dorsal fin turret is a separate piece(s) now so can rotate. And there are optional external cannons (HLC or Ion/Tractor Beam) and an optional external Advanced Slam engine unit.