Version number is now 1.1.
(_upgrade)  New routine.  Convert settings from old to new formats
  if required.  Add a version number to each configuration file.
(parse_digests)  Use a new one-field-per-line format.
  Add support for a new "newmsg" field, which controls whether or not
  incoming messages will cause digests to be checked.
(add, trigger, choose)  Add support for the "newmsg" field.
(collect_data, _r_ct_lines) Add sanity checks.  Thanks to Brock Rozen.
(confirm)  Bugfix:  remove inappropriate array reference.
(t_accept)  Add second argument to n_defaults call.
Support "true" for "yes" and "false" for "no".
(str_to_offset)  Bugfix:  use a definition test instead of defaulting
  to an empty string.
More Sendmail docs from Brock Rosen.
Add INCLUDE links and minor rewording.
Expand the description and add references and INCLUDE directives.
Add INCLUDE directives.
Remove files for the obsolete database_backend setting.
Add INCLUDE directives and help references; rearrange the description.
Add tests for the set command.
(common_subs)  Bugfix:  supply default value for chunksize.
(_set)  Bugfix:  correct syntax error.  Thanks to Brock Rozen.
Expand the description.  Add INCLUDE directives and references.
Clarify the instructions.  Suggested by Roger Klorese.
Tweak to bounce_rules documentation suggested by Brock Rosen.
Fix typo.  Thanks to Brock Rozen.
Expand the description.  Add INCLUDE directives and references.
Minor rewording.
Add several items.