EDNS0 for djbdns?

Has anyone modified tinydns or dnscache to support EDNS0?  I know all
the reasons it is in principle a bad idea, but these days every other
DNS package supports it, and DNS packet sizes are getting bigger.  A
few months ago I modified one of my special purpose DNS servers (the
one that runs abuse.net) to handle it, and I have to say I've seen no
operational problems at all.

I doubt that it would be a huge amount of code, but I'd just as soon
not write it if somebody else has already done so.

R's,
John