more on plugins/toolbar

Thanks for the tip on variable expansion. I'll add it in

    > to my current code.

Hi Abraham,

Just wanted to let you know I haven't dropped off the face of the
planet. With SciPy looming and other deadlines, I haven't had a
chance to look into your code in any detail. I'll be away all of next
week, so it will be some time until I get a chance to take a look.
Keep plugging away (pun intended) and hopefully we can put together
something nice in the near term. I think your hybrid solution of
using a plain text key/val pair format for rc, and user customizable
python for toolbar config, is a good one.