Log Message:
Update to 4.47.0. From the changelog:

- try to work around pathological breakage in one random POP server
  implementation. Thanks: Michael Thomas Kockmeyer.
- remove dead marc.theaimsgroup.com list archive from docs. Thanks:
  Miroslav Rovis.
- bugfix: if you combined IMAP IDLE mode with delete_after, getmail would,
  after remaining connected to the server for the number of days
  configured, begin deleting messages immediately after retrieval
  instead of after the configured delay. Now fixed. Thanks:
  Johannes Weißl.