New v1.2 (beta) Update

Another update, this one is a big one so I'm releasing it as a beta until it's been tested a bit more.

Changes:

• Revamped solar system procgen to look more realistic and be more interesting to play.
• Added random events ([!] on the map). Currently just give you fuel, but will add more later.
• Maps now have bosses guarding the ring.
• System cards now have health (lower right corner). When a system is hit, it loses a health point, and becomes a DAMAGED SYSTEM when it reaches 0 (and is discarded). Systems damaged in this way receive a permanent -1 to their health (but will not go below 1) until they are repaired at a station.