v0.2.3: refactored buffs which provide immunities, added (unused) resistances as well.

src/com/shatteredpixel/shatteredpixeldungeon/actors/buffs/ToxicImbue.java

@@ -32,9 +32,8 @@ public class ToxicImbue extends Buff {
         return "Imbued with Toxicity";
     }
 
-    public static final HashSet<Class<?>> IMMUNITIES = new HashSet<Class<?>>();
     static {
-        IMMUNITIES.add( ToxicGas.class );
-        IMMUNITIES.add( Poison.class );
+        immunities.add( ToxicGas.class );
+        immunities.add( Poison.class );
     }
 }