io_webservices/chelsa: fix, typo
saga_gui, CWKSP_Table/CVIEW_Table_Diagram: fix, crash if destroyed on creation (i.e. has been canceled, tabbed-mdi only)
table_tools/table_cluster_analysis: renamed and options added (maximum iterations, elbow method, ...)
saga_api, CSG_Cluster_Analysis: quality/error measures added (wcss/distortion/inertia)
saga_gui, CWKSP_Data_Item::Copy_Settings(): don't copy scaling/offset/unit
saga_gdi, 3d_view: twin view window option added for upside down screens
imagery_classification/classify_cluster_analysis: elbow method option added
saga_api, CSG_Cluster_Analysis: quality/error measures added (wcss/distortion/inertia)