+- Show ribbon tools help strings in tooltips (John Roberts).
+- Improve row/column selection modes in wxGrid (joostn).
+- Send wxEVT_UPDATE_UI for wxRibbonButtonBar and wxRibbonToolBar (Emilien Kia).
+- Add InsertXXXButton() to wxRibbonButtonBar and wxRibbonToolBar (Emilien Kia).
+- Allow enabling/disabling and toggling tools in wxRibbonToolBar (Emilien Kia).
+- Fix multiple item selection in generic wxTreeCtrl (Igor Korot).
+- Implement wxMenuBar::IsEnabledTop() for all major ports (Igor Korot).
+- Implement best size calculation for report mode wxListCtrl.