Added HackedShields and B action threat handling.
Added DimensionSpider.
Added cryoshield frigate.
Added Alien.
Added 3 more external serious white threats.
Extracted common external threat stuff.
Added last 5 white external serious threats.
Made the Duck an argument to each threat ctor instead of to each breakpointcrossing action.
Added BattleBot uprising and allowed multiple zones for an internal threat.
Reworked constructors for threats.
Added remaining minor internal white threats. Extracted common parts of threats with multiple copies.