Pieces now listed by last modified date

When I redesigned this site two years ago, one of the pieces
from the old site that got left out of the first implementation
was a listing of pieces by date last modified.
I don't know how many people ever used it, but I found
it useful when someone found an error that I was sure I had
fixed.
On the new site, I've been really good about telling people
when I put new pieces up, but quite unreliable about blogging when
I fix things. So now if you have an old download that has
problems, and you're wondering if you should write and tell me
about them, you can check the by
date
page and see if there's a newer version than what you have.