2.8.3: * gtkmm.h: Include menutoolbutton.h and tearoffmenuitem.h. (Michael J M Thomson) * Container: Avoid crash when connecting to the remove signal. (bug #315874 from Philip Langdale.) * TreeView: Commented-out uses of g_assert() in header to avoid warning that the statement has no effect. (Murray Cumming) * Win32: Enable Plug and Socket classes. (Cedric Gustin) * Documentation: - Reference: Correct mentions of free() or NULL. (Murray Cumming) - Tutorial: Improved appearance of HTML and updated screenshots. (Jonathan Jongsma)