Java 11 migrate remaining (g,h,i) (#1116)

* Moves game-loop to Java 11

* Moves guarded-suspension to Java 11

* Moves half-sync-half-async to Java 11

* Moves hexagonal to Java 11

* Moves intercepting-filter to Java 11

* Moves interpreter to Java 11

* Moves iterator to Java 11

game-loop/src/test/java/com/iluwatar/gameloop/GameLoopTest.java

@@ -65,7 +65,7 @@ public class GameLoopTest {
 
   @Test
   public void testIsGameRunning() {
-    Assert.assertEquals(false, gameLoop.isGameRunning());
+    Assert.assertFalse(gameLoop.isGameRunning());
   }
 
 }