You mean the thing that is displayed by "svn log"? Or
http://code.djangoproject.com/timeline/ :-)
Seriously, every time somebody says "wouldn't it be great if ...", the
answer is "yes, feel free to do it and it will be appreciated." It takes
a ton of work to keep that sort of thing up to date. Editing even the
backwards-incompatible changes page is a massive pain. Creating TWID is
an impressive effort from Michael and Brian each week. You're asking for
us to do even more work in a time when everybody is very busy. You might
find somebody who wants to do this, but realise that it's a lot of work.
Regards,
Malcolm