Small demo update incoming — Broadside Renegades Steam update #1389984

Small fixes/updates to the demo build incoming. Going to test over the weekend before the fest starts to go live. - Changed Civ ship spawning to ensure a cargo ship is spawned first on every map and types rotate between fuel and cargo predictably. This should prevent awkward stretches of fuel ship spawns near the beginning of a run when the player has less enemies to contend with, and ensure at least one upgrade is obtained quickly. - Fixed a placeholder item description for asteroid tractor beam's 5th upgrade level - Fixed a crash when... crashing. In rare cases a collision would kill the player, but also trigger an upgrade from the enemies gold drops at the same moment, causing a crash.