Moreover, as Valentin, the administrator of lilynet.net,
is (currently) inactive as a developer, I think we should
strive to move discussions to mailing lists hosted by
gnu.org, which is proven to have long-term reliability
without requiring maintenance on our side. What should
we pick, lilypond-devel or a new mailing list? I lean
towards moving everything on lilypond-devel, because we
already have many communication channels compared to the
size of the development community (lilypond-devel,
bug-lilypond, issues, merge requests). Questions about
the workflow are also important for developers, and
build issues affect everyone of course. Individual
translators can always be CCed in a particular thread
if needed.