Handling ACCENT

[koppor]

I ran into the following output:

No handling for ACCENT coded yet!

What needs to be done there? 😅

Naively, I would say, use latex2unicode to handle these cases, because UniCode is really widespread these days. But I know, that using Scala code is not that nice (and we are internally also thinking of rewriting that part of the code base - refs JabRef/jabref#3644)