[plt-scheme] mzgtk2 status update

L.S.,

mzgtk2 is progressing at a constant pace at the moment.
I'm not far of the first alpha release of mzgtk2. To have
an indication on the classes currently implemented for
mzgtk2, see

http://www.elemental-programming.org/epwiki/mzgtk2-mzgtk2-classes.html

Note. Most classes have no documentation yet. Especially
the treemodel, treeview, renderer, treecolumnview implementations
are interesting, as they do not make use of the standard GtkListStore or
GtkTreeStore models, but implement a callback mechanism to mzscheme,
so that the data to be rendered in the views can really be provided
dynamically from mzscheme.

Best regards,

Hans Oesterholt