* Fixe warning : `UnityEngine.EventType.mouseDown' is obsolete in Unity 2017.3.0f3
* Fixe warning : Unable to find style 'As TextArea' in skin 'DarkSkin' Layout when EasyTouch gameobject is selected in Unity 2017.1.0f3 for virtual control
* Remove CG alloc from Virtual Control
Thank you to use EasyTouch
