Fix spooky shaded contraptions

- Logic error in GPULightVolume#move
 - Race condition from LightUpdater showing up in LightVolume#initialize

src/main/java/com/jozufozu/flywheel/light/GPULightVolume.java

@@ -114,15 +114,8 @@ public class GPULightVolume extends LightVolume {
 		if (lightData == null) return;
 
 		if (box.contains(newSampleVolume)) {
-			if (newSampleVolume.intersects(sampleVolume)) {
-				GridAlignedBB newArea = newSampleVolume.intersect(sampleVolume);
-				sampleVolume.assign(newSampleVolume);
-
-				copyLight(world, newArea);
-			} else {
-				sampleVolume.assign(newSampleVolume);
-				initialize(world);
-			}
+			sampleVolume.assign(newSampleVolume);
+			initialize(world);
 		} else {
 			super.move(world, newSampleVolume);
 		}

src/main/java/com/jozufozu/flywheel/light/LightUpdater.java

@@ -46,6 +46,19 @@ public class LightUpdater {
 	}
 
 	public void tick() {
+		tickSerial();
+		//tickParallel();
+	}
+
+	private void tickSerial() {
+		for (MovingListener movingListener : movingListeners) {
+			if (movingListener.update(provider)) {
+				addListener(movingListener);
+			}
+		}
+	}
+
+	private void tickParallel() {
 		Queue<LightListener> listeners = new ConcurrentLinkedQueue<>();
 
 		taskEngine.group("LightUpdater")