+- Changed calculation of scrolling area to not clip away some bits
+ due to a rounding error.
+- Changed GetVirtualSize() to return client size by default until
+ SetVirtualSize() gets called. From then on it will only return that.
+- Various changes to how wxListCtrl and wxTreeCtrl react to right
+ mouse clicks and left mouse click for starting a drag operation.
+- "Alt" key (VK_MENU) now results in WXK_ALT keyboard event, not WXK_MENU
+- wxFFile::ReadAll() now takes an optional wxMBConv parameter
+- wxCommandProcessor::MarkAsSaved() and IsDirty() added (Angela Wrobel)
+- added wxStackWalker and related classes (Win32 and some Unix versions only)