Updated onDeath and onRespawn methods
Overrided new abstract methods in Arena
Removed unused imports
Overrided new abstract methods in Arena
Removed unused imports
Added removeAllPlayers method
setRunning to true in start()
Added listener for player respawning
Updated PlayerDeathListener to use new method in Arena
Added getHighestKills, getPlayerWithHighestKills, and getTopPlayers
Added forceStopTimer and getLobbyTimerTaskID
Updated forceStop method to stop all running tasks
setRunning to false in end()
Updated onDeath method