Performance & Memory: This update improves the major Player wrapper class. To keep it short and simple the wrapper class is now referenced by UUID with the players UUID as the Map key and no longer the Player object itself. Using the Player object could cause memory leaks over long periods of time with a reasonable amount of game activity. This is no longer the case.
As this update potentially frees up memory on your server I'd strongly advise that you update to this version to benefit from the improvements. This can benefit more than just Pocket Games as it will free up more system resources for other plugins to allow them to also perform better.