Russ Allbery authored Oct 23, 2019 and Sean Whitton committed May 18, 2021

Closes: #932696

Keep the debian/missing-sources convention as optional, although
reword the paragraph somewhat.

Don't use normative language when describing what the Release Team
is allowed to do with bug severities.  Thanks, Sam Hartman.

Avoid another may in favor of "is permitted".

Document the semantic change for /usr/lib64 in the upgrading
checklist.  Further improve the wording around who is allowed
to ship /etc/rc.d directories.  Tighten the definition of may
and optional.

Review and fix uses of may and optional that are incorrect or
confusing under the new terminology rules.  Qualify the uses of
may somewhat more, since it's also a common word in normal English
prose.

Add an additional keyword (prohibited) and an additional tier
(encouraged and discouraged).  Provide terminology for the
collective set of requirements, recommendations, and advice.

Put chapter 1 footnotes under the section to which they apply,
rather than at the end of the chapter.

    Wording: Helmut Grohne <helmut@subdivi.de>
    Seconded: Russ Allbery <rra@debian.org>
    Seconded: Christoph Berg <myon@debian.org>
    Seconded: Sean Whitton <spwhitton@spwhitton.name>
    Closes: #983657

Reported-by: Anatoli Babenia <anatoli@rainforce.org>

Vagrant Cascadian authored Nov 16, 2020 and Sean Whitton committed Nov 16, 2020

While a consistent time was returned, depending on the timezone
the package was built in can cause the date to vary:

  https://reproducible-builds.org/docs/source-date-epoch/

    Wording: Sean Whitton <spwhitton@spwhitton.name>
    Seconded: Mattia Rizzolo <mattia@debian.org>
    Seconded: Holger Levsen <holger@layer-acht.org>
    Closes: #971023

    Wording: Sean Whitton <spwhitton@spwhitton.name>
    Seconded: gregor herrmann <gregoa@debian.org>
    Seconded: Graham Inggs <ginggs@debian.org>
    Closes: #959909

Suggested-by: Guillem Jover <guillem@debian.org>