Semi-persistant scripting environments were added, and remote scripting was introduced. New language management was introduced and stenvironment, a new tool for semi-persistent environments was added. stexec now can read from standard input. Remote scripting was added to the stshell and stexec tools. New conversation methods were provided and the obsolete stalk and stupdate_languages tools were removed along with some deprecated methods and obsoleted classes. Framework compilation cleanups and various bugfixes were made.
