Log Message:
Update to 4.0.2. The changelog is lengthy. The author's summary of
differences from previous versions:

getmail version 4 has been completely rewritten. It is designed to
closely mimic the interface and user experience of getmail version
3, but the new architecture necessitates some differences you will
notice:

* the getmail rc file (configuration file) format has changed. If
  you are upgrading from version 3, you will need to write a new
  configuration file based on the contents of your old one. The
  new file format resembles the old in many ways. Each account you
  retrieve mail from will require a separate rc file, but getmail
  can operate with multiple rc files simultaneously if you wish to
  retrieve mail from multiple accounts.

* support for protocols other than POP3/SPDS. IMAP support is now
  included, and other protocols can be added with relative ease.

* support for SSL-encrypted protocols. The included POP3 and IMAP
  retriever classes are complemented by SSL-enabled counterparts.

* messages can be filtered or annotated by external programs like
  spam filters and anti-Microsoft-worm programs. Filters can cause
  messages to be dropped completely.

* a flexible, extensible architecture. Additional classes for
  handling new mail protocols, filter types, or destination mailstores
  can be added without needing to modify the main script at all.
  Feel free to contact me if you need a custom retriever, filter,
  or destination class written, or if you want commercial support
  for getmail.