This commit reverts db7ef3f02517f9f2a3c56829a22b9fad3c36e374
(though it keeps the year updates)
After discussion with several people, it seems better to mention
copyright owners explicitly. eg. https://reuse.software/faq/#vcs-copyright
explains the issue of using VCSs to track copyright.
As db7ef3f02517f9f2a3c56829a22b9fad3c36e374 only replaced mentions
of my name with 'The Limnoria Contributors', this commit only needs
to undo that + add one person who contributed to setup.py.
This should prevent the accumulation of old unclaimed notes in the database,
which is possible due to notes left to misspelled nicks, to temporary nicks
used by regulars, or to one-time visitor nicks.