Double check Furu

[bambooforest]

@EitanGrossman -- can you double check these entries:

https://github.com/segbo-db/segbo/blob/master/data/SegBo%20database%20-%20Phonemes.csv#L1505-L1506

[h] is also listed in the PDF, but I can't easily find these two comments in our phonemes data:

long [r] occurs in interjections

appears to affect the native realisation of /z/. Other source languages too

And no mention of whether [h] is marginal and not a borrowed segment (if so, let's mention that in the notes, since it's listed as marginal in phoible with the same ID and doculect (phoible doesn't explicitly state whether a segment is marginal and a loan, fyi)