Implemented "relax" mod.

Also added a few checks for related "autopilot" mod (probably incomplete).

Fixed the wrong default background being shown in the ranking screen.

Signed-off-by: Jeffrey Han <itdelatrisu@gmail.com>

src/itdelatrisu/opsu/objects/Spinner.java

@@ -195,13 +195,13 @@ public class Spinner implements HitObject {
 		}
 
 		// game button is released
-		if (isSpinning && !Utils.isGameKeyPressed())
+		if (isSpinning && !(Utils.isGameKeyPressed() || GameMod.RELAX.isActive()))
 			isSpinning = false;
 
 		float angle = (float) Math.atan2(mouseY - (height / 2), mouseX - (width / 2));
 
 		// set initial angle to current mouse position to skip first click
-		if (!isSpinning && Utils.isGameKeyPressed()) {
+		if (!isSpinning && (Utils.isGameKeyPressed() || GameMod.RELAX.isActive())) {
 			lastAngle = angle;
 			isSpinning = true;
 			return false;