combos

mantisBoss flashes for a second before it drops invulnerability
removed parasitism - it's too similar to invulnerability tech
invariant no longer drains energy while wormhole time is paused
  added 1 research cost
added secret combo to change molecular assembler mode

bug fixes
  issue with constraint: "mob death heals mobs"
    mob health was becoming NaN, this was infecting other values like player energy
  entering a seed in settings wasn't giving the same results as a randomly generated seeds
    also removed some random code that was using seeded shuffle, but didn't need to
      converted it to non seeded random shuffle with .sort(() => Math.random() - 0.5);

js/powerup.js

@@ -1653,6 +1653,7 @@ const powerUps = {
             if (b.inventory.length === 0) {
                 powerUps.spawn(x, y, "gun", false); //first gun
             } else if (tech.totalCount === 0) { //first tech
+                powerUps.spawn(x - 22, y - 50, "ammo", false); //some ammo
                 powerUps.spawn(x, y, "tech", false);
             } else if (b.inventory.length === 1) { //second gun or extra ammo
                 if (Math.random() < 0.4) {