* CorePlayer
+ Added the #setHealth(int health) method. (Sets the player's health to the param health)
+ Added the #heal() method. (Sets the player's health to 20)


* The Core PlayersManager is not static anymore. To access it you should use it.ultracore.core.Main.getPlugin(it.ultracore.core.Main.getClass).whatYouNeed. For example, for the PlayersManager the code would be:
it.ultracore.core.Main.getPlugin(it.ultracore.core.Main.getClass).playersManager;