Remove unneeded "domain" variables from forms.
Add format file support for the which command.
Add format file and supplementary display support for the which command.
Add buttons for the unsubscribe command.
Clarify the search instructions.
Display the requester's address.
The which and who commands use a case-insensitive substring match
by default.
The regex and pattern modes are no longer supported.
Add missing SGML comments.
(_set) Return the stripped address in the "stripaddr" variable and
  the full address in the "victim" variable.
(_which)  Add a back end for the which core routine to allow the command
  to stall.
Remove support for the which-regex and which-pattern commands.
(accept, reject) Place the requester's address in quotes for the
  sake of substitutions.
(set)  Support the QSADDR substitution.
(which)  Add format file support.
(t_accept)  Convert the token data args to their request hash
  equivalents earlier.
Add tests for the which, changeaddr, and unregister commands.