Wow, the list of modules has gotten very respectable since the first time I heard about Julia. I have one concern though: how well-tested are they? There's one

Wow, the list of modules has gotten very respectable since the first time I heard about Julia. I have one concern though: how well-tested are they? There's one really prominent contributor (John Myles White), who has written a rather large number of packages. But there are only a limited number of bug-free LOCs that a human can write in a given time-span. So Julia might well be a better language than R, but is it standard library as reliable? And how much time will it take until it becomes as trusted as that of R?