Many of our scripts have copyright notices at the top like this
(category.py):
# (C) Rob W.W. Hooft, 2004
and then:
# (C) Pywikibot team, 2008-2013
even if most contributors (e.g. Rob W.W. Hooft) are regularly listed in
CREDITS.
Is it to mark the main contributors? I haven't seen that notices being
updated for months, even when some scripts get significantly improved or
rewritten.