Text widget
Optimise Canvas widget for perl (sometime)
Optimise Text widget for perl (sometime)
Proper clean-up after widgets croak
Finish writing the default binding actions routines.
Cache widget stashes (or a class record) instead of Tk class names
on each window.
Implement the `send' command by having proxy remote objects.
Rewrite event propagation to be more perlish. Widget instances can have
their own binding tables or else inherit them.
"tie" interfaces to appropriate widgets.