Upgrade t-digest to 3.2 #28295
Description
Version 3.2 of t-digest was release in August 2017. We should try to upgrade to this version: https://github.com/tdunning/t-digest/releases
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Version 3.2 of t-digest was release in August 2017. We should try to upgrade to this version: https://github.com/tdunning/t-digest/releases