Recommendation is to avoid using the year nomenclature as this
information is already encoded in the git repo. Avoids needing to
repeatly update.
Also updates AUTHORS.txt from current repo with contributor names
Saves about 30% of the time to open the sim model
dialog. Pretty much all the remaining time is in PEGTL,
and that's even with short-circuiting it for most param
values.
Also includes fixes for instance data and resolving of textvar
references.
Also includes virtual d'tors for IBIS parser to get rid of all the
compile warnings on CLang.
Fixes https://gitlab.com/kicad/code/kicad/issues/12357