SM.Base:
~ Improved Keyboard.AreSpecificKeysPressed(int, int)
~ Made GenericTransformation.LastMaster's set public
~ Made the fixed update use the property "IsExiting" to determent if it should stop.
~ The MainFramebuffer of each RenderPipeline now has always a name.
SM2D:
~ Moved the checking code of Mouse2D.MouseOver into a own method.