Similiar to the invertAlpha flag on Bitmap Mask this flag if set to true
will esentially invert the function of the stencil buffer: non drawn
shapes will become invisible and drawn shapes will be visible.
* The `Game.resize` method has been removed as it's no longer required. You should now call `ScaleManager.resize` instead.
* The Game will no longer dispatch the `resize` event. You should now listen for this event from the Scale Manager instead.
* `BaseCamera.config` has been removed as it's no longer required.
* `BaseCamera.scaleManager` is a new property that references the Scale Manager and is used internally for size checks.
* `InputManager.scaleManager` is a new property that is a reference to the Scale Manager. This is populated in the `boot` method.
* The `InputManager.transformX` method has been removed. This is now available in the ScaleManager.
* The `InputManager.transformY` method has been removed. This is now available in the ScaleManager.
* The `InputManager.scale` property has been removed. This is now available in the ScaleManager under `displayScale`.
* The `InputManager.resize` method has been removed as this process is now handled by the ScaleManager.
* The `InputManager.updateBounds` method has been removed as this process is now handled by the ScaleManager.
* The `InputManager.getOffsetX` method has been removed as it's no longer required.
* The `InputManager.getOffsetY` method has been removed as it's no longer required.
* The `InputManager.getScaleX` method has been removed as it's no longer required.
* The `InputManager.getScaleY` method has been removed as it's no longer required.
