tdunning/t-digest — pull request #15 by jpountz (2014-03-19 15:21:12+00:00)
Title: Make TDigest instances able to summarize more than 2B values.

Centroid counts remain tracked as integers, but whenever counts of several
centroids need to be summed up, a long is used instead. This should allow
for summarizing datasets of at least several tens of billions of values.

Close #14