Updates and fixes from fluddokt/opsu@76778f8 and fluddokt/opsu@cf321e9.

- Rotate slider ball image along the curve.
- Show download speed and time remaining when hovering over the download info button.
- Maintain aspect ratio of beatmap background image during gameplay.
- Clear beatmap background image cache after reaching OsuFile.MAX_CACHE_SIZE.
- Multiply hit circle size by OsuHitObject.getXMultiplier().
- Scale MENU_BUTTON_BG based on SongMenu.MAX_SONG_BUTTONS.
- Fixed download search TextField retaining focus even after leaving the downloads menu.
- Include Unicode title/artist strings in searches.
- Parse x,y beatmap coordinates as floats (instead of integers), and only read Kiai time if present.
- Added 1600x1200 resolution.

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

src/itdelatrisu/opsu/states/MainMenu.java

@@ -168,7 +168,7 @@ public class MainMenu extends BasicGameState {
 		// draw background
 		OsuFile osu = MusicController.getOsuFile();
 		if (Options.isDynamicBackgroundEnabled() &&
-			osu != null && osu.drawBG(width, height, bgAlpha))
+			osu != null && osu.drawBG(width, height, bgAlpha, true))
 				;
 		else {
 			Image bg = GameImage.MENU_BG.getImage();