keyReleased(key, keyCode);EventCalled whenever a key is released.
Arguments
keyThe released key as a string, is nil if glfw cannot find a name for the keykeyCodeThe released key as a key codekeyReleased(key, keyCode);EventCalled whenever a key is released.
keyThe released key as a string, is nil if glfw cannot find a name for the keykeyCodeThe released key as a key code