Initial replay parsing support.

- Basic implementation of viewing replays in the Game state.
- Added OsuReader class for reading certain osu! file types. (author: Markus Jarderot)
- Added Replay, ReplayFrame, and LifeFrame classes to capture replay data. (author: smoogipooo)
- Added 'keyPressed' parameter to HitObject.update().
- Added cursor-drawing methods in UI that take the mouse coordinates and pressed state as parameters.
- Added GameMod methods to retrieve/load the active mods state as a bitmask.
- Added Apache commons-compress dependency for handling LZMA decompression.

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

src/itdelatrisu/opsu/GameMod.java

@@ -213,6 +213,27 @@ public enum GameMod {
 		return scoreMultiplier;
 	}
 
+	/**
+	 * Returns the current game mod state (bitwise OR of active mods).
+	 */
+	public static int getModState() {
+		int state = 0;
+		for (GameMod mod : GameMod.values()) {
+			if (mod.isActive())
+				state |= mod.getBit();
+		}
+		return state;
+	}
+
+	/**
+	 * Sets the active states of all game mods to the given state.
+	 * @param state the state (bitwise OR of active mods)
+	 */
+	public static void loadModState(int state) {
+		for (GameMod mod : GameMod.values())
+			mod.active = ((state & mod.getBit()) > 0);
+	}
+
 	/**
 	 * Constructor.
 	 * @param category the category for the mod