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)

index.html

@@ -41,6 +41,7 @@
     <div id="dmg"></div>
     <div id="choose-background"></div>
     <div id='construct'></div>
+    <!-- <input type="text" id="console" spellcheck="false" /> -->
     <!-- contenteditable="true" -->
 
     <!-- guns -->