Add settter/getter for optionAlwaysDockInNotebook option
Addition of Allow() & IsAllowed() methods to wxAuiManagerEvent to mimic the wxNotifyEvent and avoid negating events results.
Fixed the order of the panes in some wxEVT_AUI_PANE_DOCK_OVER where the covering/covered pane were swapped
Fixed hint display position for panes with the optionAlwaysDockInNotebook option