Log Message:
Update to 5.515

Upstream changes:
5.515     2024-04-24  Dianne Skoll <dianne@skoll.ca>

        * VERSION 5.514 RELEASED

        * Fix the "version" setting in META.yml.  There are no other \ 
changes
          since 5.514.

5.514     2024-02-06  Dianne Skoll <dianne@skoll.ca>

        * VERSION 5.514 RELEASED

        * Move the guts of the ambiguous_content method to MIME::Head

        * Add MIME::Entity->ambiguous_content that returns true if
          this entity or any of its parts, recursively, has a MIME::Head
          whose ambiguous_content method returns true.

        * Keep MIME::Parser->ambiguous_content as a cached version of the
          most recently parsed $entity->ambiguous_content.

        * BUGFIX: Add some missing files to MANIFEST

5.513     2024-01-25  Dianne Skoll <dianne@skoll.ca>

        * VERSION 5.513 RELEASED

        * Add MIME::Parser->ambiguous_content to indicate one of several
          types of ambiguous MIME content that could be security risks.

        * Add the '@duplicate_parameters' pseudo-parameter to let caller
          detect duplicate MIME parameters on a MIME header.

5.512     2024-01-08  Dianne Skoll <dianne@skoll.ca>

        * VERSION 5.512 RELEASED

        * Use much larger chunk sizes for Base-64 encoding which reduces
          both encoding time and space overhead.
          https://rt.cpan.org/Ticket/Display.html?id=128400
          https://rt.cpan.org/Ticket/Display.html?id=130110

5.511     2024-01-02  Dianne Skoll <dianne@skoll.ca>

        * VERSION 5.511 RELEASED

        * Silence a warning if used with a development version of
          MIME::QuotedPrint
          https://rt.cpan.org/Ticket/Display.html?id=150118
          https://rt.cpan.org/Ticket/Display.html?id=149225