Log Message:
Update to 1.945

Upstream changes:
1.945     2017-07-25 14:17:32-04:00 America/New_York
        - fix encode-check.t to pass under legacy Test::Builder

1.944     2017-07-25 12:38:41-04:00 America/New_York
        - non-trial release of header_as_obj changes
        - support for supplying a non-croak encode_check (thanks, Matthew
          Horsfall)

1.943     2017-06-09 19:00:09-04:00 America/New_York (TRIAL RELEASE)
        - add Email::MIME::Header::AddressList and related support code

1.942     2017-03-05 08:15:00-05:00 America/New_York (TRIAL RELEASE)
        - This adds ->header_as_obj to get MIME headers out of the header not
          as strings, but as objects.  The field-to-header mapping can be
          amended with the ->set_class_for_header method.

1.941     2017-03-04 19:12:11-05:00 America/New_York (TRIAL RELEASE)
        - pointless mistake release