Version 4.44.0
22 March 2014
    -add extended SSL options for IMAP retrievers, allowing certificate
    verification and other features.  Thanks: Steven Murdoch.
    -fix missing plaintext versions of documentation.  Thanks: Osamu Aoki.
    -fix "Header instance has no attribute 'strip'" error which cropped up
    in some configurations.  Thanks: Krzysztof Warzecha.