quantum eraser

tech: quantum eraser - for each mob left alive after you exit a level
  kill a spawning mob with 100% duplication
symbiosis: bosses spawn a tech and also an ammo, research, and heal
  when mobs dies lose 0.45 -> 0.5 max health
boson composite - when you move through mobs they drain a little bit of energy

incendiary ammunition makes bullets explode on impact with map
polyurethane foam now works for harpoons
reactor level: timeBoss is much faster, mineBoss does 50% mine more damage
  all bosses spawn fewer numbers
  spawning all 4 bosses spawns much fewer numbers

bug fixes
  loaded a patch to matter.js physics engine 0.18 to fix issues with time dilation

js/simulation.js

@@ -114,7 +114,7 @@ const simulation = {
                 simulation.checks();
                 mobs.loop();
             }
-            m.hold();
+            if (m.fieldMode !== 7) m.hold();
             b.bulletRemove();
             if (!m.isBodiesAsleep) b.bulletDo();
         }
@@ -922,6 +922,13 @@ const simulation = {
             requestAnimationFrame(respawnWorms);
         }
 
+        if (tech.isQuantumEraser) {
+            // tech.quantumEraserCount = 0
+            for (let i = 0, len = mob.length; i < len; i++) {
+                if (mob[i].isDropPowerUp && mob[i].alive) tech.quantumEraserCount++
+            }
+        }
+
         function removeAll(array) {
             // for (let i = 0; i < array.length; ++i) Matter.Composite.remove(engine.world, array[i]);
             for (let i = 0; i < array.length; ++i) Matter.Composite.remove(engine.world, array[i]);