+- Added wxToolbook (uses a wxToolBar to control pages).
+- Added SetSheetStyle to wxPropertySheetDialog and allowed it to
+ behave like a Mac OS X settings dialog.
+- Added <disabled> XRC tag for wxToolBar elements and <bg> for wxToolBar itself.
+- Fixed centering of top level windows on secondary displays.
+- Implemented wxDisplay::GetFromWindow() for platforms other than MSW.