Log Message:
Update to 3.012

Upstream changes:
version 3.012: Fri 11 Feb 11:34:31 CET 2022

        Fixes:
        - ::Field::Attributes should be stored case intensively
         rt.cpan.org#140894 [Yanyan Yang]
        - ::Field::Full phrase with encoding qp parsing failed when
          the qp contains non-atext characters. Github#2 [Andy Beverley]
        - ::Field::Full QP encoding must be more strict for use in
          MIME headers.  Github#3 [Andy Beverley]
        - Coercion from Mail::Address to Mail::Message::Full::Address
          is too lazy.  Github#4 [Andy Beverley]

        Improvements:
        - extend date in mbox-separator to accept 203X as well.