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
Change Eagle file importer to use a two pass import. The first pass
parses the entire Eagle file into an associated E* object. The second
pass converts the parsed E* objects into the appropriate KiCad objects.
Improve handling of Eagle versioned libraries.
Add helpers to IO_BASE to ease handling of PROGRESS_REPORTER and REPORTER
objects.
ADDED: Support for importing Eagle schematic modules.
Fixes https://gitlab.com/kicad/code/kicad/-/issues/1813
