finalBoss boulders

finalBoss has a new phase: "boulders"
  each phase has been rebalanced
  boss health is a bit higher
  mob mines are white now

pilot wave gets +1 choice for gun,field,tech

bug fixes:

js/mob.js

@@ -1228,7 +1228,7 @@ const mobs = {
                         //     }); //wrapping in animation frame prevents errors, probably
                         // }
                     }
-                    if (tech.isEnergyLoss) m.energy *= 0.75;
+                    if (tech.isEnergyLoss) m.energy *= 0.8;
                     powerUps.spawnRandomPowerUp(this.position.x, this.position.y);
                     m.lastKillCycle = m.cycle; //tracks the last time a kill was made, mostly used in simulation.checks()
                     mobs.mobDeaths++