dielectric polarization

mod rail gun: dielectric polarization - firing the rail gun damages nearby mobs

block hole mobs are no longer visible before they activate
striker mobs teleport more often
final boss:
  laser does no damage for 2 seconds after it begins
  spawns 2 waves of mobs each spawn cycle  (was 3)

js/mods.js

@@ -2448,6 +2448,22 @@ const mod = {
                 mod.isRailEnergyGain = false;
             }
         },
+        {
+            name: "dielectric polarization",
+            description: "firing the <strong>rail gun</strong> <strong class='color-d'>damages</strong> nearby <strong>mobs</strong>",
+            maxCount: 1,
+            count: 0,
+            allowed() {
+                return mod.haveGunCheck("rail gun")
+            },
+            requires: "rail gun",
+            effect() {
+                mod.isRailAreaDamage = true;
+            },
+            remove() {
+                mod.isRailAreaDamage = false;
+            }
+        },
         {
             name: "capacitor bank",
             description: "the <strong>rail gun</strong> no longer takes time to <strong>charge</strong><br><strong>rail gun</strong> rods are <strong>66%</strong> less massive",
@@ -3298,5 +3314,6 @@ const mod = {
     isMineSentry: null,
     isIncendiary: null,
     overfillDrain: null,
-    isNeutronSlow: null
+    isNeutronSlow: null,
+    isRailAreaDamage: null
 }