Also makes sure that the instance fields get set for reference, value and footprint, and not just the base SCH_FIELD. Also makes the translations easier. Fixes https://gitlab.com/kicad/code/kicad/issues/6459
Also gives Change Symbol control over which fields to update. Fixes https://gitlab.com/kicad/code/kicad/issues/5217
ADDED: Add support to to Eeschema to change and update symbols from a symbol library. Fixes: https://gitlab.com/kicad/code/kicad/-/issues/4565