[plt-scheme] inheritance of methods

Yes, DrScheme will and does provide more than just editing support
for Python. Right now, you can use DrScheme's repl to interact with
Python programs, you can use DrScheme's syntax check to color the
syntax and to link bound variables (not methods). The second one
is a bit broken and needs some work. Some other things that should
work but we haven't wired them up yet:
  - the test suite tool
  - the performance measurement highlighting
  - homework submission tool.
Eventually we also want analyze to work on it.

I have posted a second screen shot:
   http://www.ccs.neu.edu/home/matthias/Tmp/spy2.jpg

The first one is at
  http://www.ccs.neu.edu/home/matthias/Tmp/spy.jpg
as Jamie correctly pointed out.

-- Matthias

P.S. I have nothing to do with this project. Daniel Silva and Philippe
Meunier deserve thanks and flames.