+- wxPropertyGrid: improve composite flags handling (Jens Lody).
+- Don't crash laying out wxGridBagSizer with only hidden elements (briceandre).
+- Fix alignment and transparency of bitmaps in wxDataViewCtrl (Eric Jensen).
+- Fix crash when auto-sizing a wxDataViewCtrl column (Spencer T. Parkin).
+- Add wxHtmlTag::GetParamAsString() convenience method.
+- Add wxActivateEvent::GetActivationReason() (Trigve).