Add ANIMALS tpe to PopulateChunkEvent.Populate Custom providers should call this function if they spawn animals curing population. Closes #790

src/main/java/net/minecraftforge/event/terraingen/PopulateChunkEvent.java

@@ -50,7 +50,7 @@ public class PopulateChunkEvent extends ChunkProviderEvent
     {
         /** Use CUSTOM to filter custom event types
          */
-        public static enum EventType { DUNGEON, FIRE, GLOWSTONE, ICE, LAKE, LAVA, NETHER_LAVA, CUSTOM }
+        public static enum EventType { DUNGEON, FIRE, GLOWSTONE, ICE, LAKE, LAVA, NETHER_LAVA, ANIMALS, CUSTOM }
         
         public final EventType type;