Made BlockStates inform playes upon update

src/main/java/org/bukkit/craftbukkit/block/CraftBlockState.java

@@ -180,6 +180,7 @@ public class CraftBlockState implements BlockState {
             }
 
             block.setData(getRawData());
+            world.getHandle().notify(x, y, z);
         }
 
         return true;