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/states/SongMenu.java

@@ -41,6 +41,7 @@ import itdelatrisu.opsu.audio.SoundController;
 import itdelatrisu.opsu.audio.SoundEffect;
 import itdelatrisu.opsu.db.OsuDB;
 import itdelatrisu.opsu.db.ScoreDB;
+import itdelatrisu.opsu.replay.Replay;
 import itdelatrisu.opsu.states.ButtonMenu.MenuState;
 
 import java.io.File;