[Specberus, pubrules] GitHub issues accepted (required for RECs)

[Antonio Olmo Titos]

The current version of Specberus, 3.3.0 [1], introduced a number of changes;
we wanted to call your attention to two in particular:

• A pointer to GitHub issues (instead of a mailing list) is also
valid now as the
"public archived place to send comments to" [2].

• Recommendations *must* provide such link to GitHub issues now [3].

There is a thread [4] where some people are discussing the wisdom of
those decisions; please weigh in there if you have comments.

Regards,

[1] https://github.com/w3c/specberus/releases/tag/v3.3.0
[2] https://github.com/w3c/specberus/pull/631
[3] https://github.com/w3c/specberus/pull/634
[4] https://github.com/w3c/specberus/issues/629