removed ice IX gun

reroll renamed -> research

spore damage increased 25%

ice IX has it's damage buffed by 50%, and freeze effect lasts 2s (up from 1s)
ice IX is no longer a gun
  but you can still get it for nano-scale field (and it's pretty strong)
tech: heavy water was removed

tech: correlated damage - duplication chance also gives % damage
(also added some minor nerfs to other duplication tech for balance)

js/simulation.js

@@ -527,7 +527,7 @@ const simulation = {
         b.setFireCD();
         simulation.updateTechHUD();
         powerUps.totalPowerUps = 0;
-        powerUps.reroll.rerolls = 0;
+        powerUps.research.research = 0;
         mech.setFillColors();
         mech.maxHealth = 1
         mech.maxEnergy = 1