p5-Text-Hunspell: update to 2.16

While here, take maintainership.

2.16    2022/07/15 13:04:00 Europe/Oslo (cosimo)

        Included LICENSE file in distribution manifest.

2.15    2022/07/15 12:19:00 Europe/Oslo (cosimo)

        Documentation and license improvements:
        - Merged https://github.com/cosimo/perl5-text-hunspell/pull/14 by @manwar (from 2015! Sorry)
        - Merged https://github.com/cosimo/perl5-text-hunspell/pull/16 by @choroba (from 2016! Sorry)
        - Merged https://github.com/cosimo/perl5-text-hunspell/pull/18 by @JJ (from a month ago)

(gutteridge)