+- "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)