Chema Celorio <chema@ximian.com>

Thanks to :
Michal Palczewski <mpalczew@u.washington.edu> - Widget tree window
Archit Baweja <bighead@users.sourceforge.net> - New widgets, _get_type
Shane Butler <shane_b@operamail.com> - Glade Widget signals editor
Tristan Van Berkom <tvb@gnome.org> - Non widget support.