$ lloyd-uniq -v 0.2.2
$ time lloyd-uniq -key DOI fixtures/crossref.100k.ldj > /dev/null
real 0m16.168s user 0m14.736s sys 0m2.238s
$ lloyd-uniq -v 0.2.3
$ time lloyd-uniq -key DOI fixtures/crossref.100k.ldj > /dev/null
real 0m11.158s user 0m9.985s sys 0m1.097s