No user-visible change. Win32-specific additions to the C module were made to compile it.
process_revents(), a Wrapper for R_ProcessEvents (# suggested by June Kim to help with issues related to interactive display on win32), and for R_RunHandlers on UNIX-like systems (# patch by Nathaniel Smith).
All callbacks are getting a get<callback> to complement the set<callback>. (# Patch by Nathaniel Smith)
(# from a patch by Nathaniel Smith)