gdk overrides: Fix wrapping of scroll events
Gdk.EventType.SCROLL events have not been properly wrapped, as e.g. event.direction = XYZ
does not modify the underlying event. The actual event object lives in event.scroll
subobject. All other event types implement attribute access passthrough to that object, so perhaps we should do the same for scroll events.
Edited by Povilas Kanapickas