Prevent mobspawns on antiblocks as Cpt mentioned he wanted to do in #169

src/main/java/com/cricketcraft/chisel/block/BlockCarvableAntiBlock.java

@@ -1,6 +1,8 @@
 package com.cricketcraft.chisel.block;
 
 import net.minecraft.block.material.Material;
+import net.minecraft.entity.EnumCreatureType;
+import net.minecraft.world.IBlockAccess;
 
 import com.cricketcraft.chisel.Chisel;
 import com.cricketcraft.chisel.api.ICarvable;
@@ -26,4 +28,8 @@ public class BlockCarvableAntiBlock extends BlockCarvableColor implements ICarva
 		return false;
 	}
 	*/
+	@Override
+	public boolean canCreatureSpawn(EnumCreatureType type, IBlockAccess world, int x, int y, int z) {
+	    return false;
+	}
 }