get oftc using bulkexitlist again
Once upon a time, irc.oftc.net grabbed a periodic list of Tor exit IPs, and added a mask @x.tor-irc.dnsbl.oftc.net for users coming from those IPs.
But I frequently see users coming from e.g. tor-exit.boingboing.net which indicates that oftc didn't recognize they're a Tor exit.
For a long time bulkexitlist was flaky, so I don't blame oftc for doing something else. Maybe now is a good time to revisit?