---------------
Note that the majority of changes in this release were contributed back
from the Debian pyzor package.
* Man pages for pyzor and pyzord.
* Changing back to signals for database locking,
rather than threads. It is likely that signals
will be removed again in the future, but the
existing threading changes caused problems.
* Basic checks on the results of "discover".
* Extended mbox support throughout the library.
* Better handling on unknown encodings.
* Added a --log option to log to a file.
* Better handling of command-line options.
* Improved error handling.