Et al. styling

Allowing styling of “et al.” has been discussed before, but as far as I
could discover it hasn’t yet been implemented.

Previous discussion:

New tracker ticket:

Rintze Zelle

This and at least some of the other three open ticket options need at
least one project to commit to implementing, preferably with )in this
case) a specific proposal. Otherwise, there’s not much point; we’d be
causing problems with no clear benefit.

So, I’d appreciate if SImon/Dan, Johan, Andrea, etc. could take a look
at the tracker when they get a chance, and weigh in. I’d like us
sometime be able to declare 1.0.