Looks good. Thank you!

Do you think you could add the newly supported formats as test cases in tests/gedcom.spec.ts?

@PeWu Sure, can do—but actually, now that I think about it, is there any reason to split out the forename and surname in the first place? Shouldn't topola just respect the ordering and naming of the individual, as given in the file? Because GEDCOM is designed to be flexible and allow all name orderings and conventions, whatever that might be in the individual's culture.

Because I've realised that if I get this PR merged, I'll soon probably have to make a PR to let the user choose the name ordering, but this seems like reinventing the wheel.