Add Jaro-Winkler distance for external ranking#29

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gleicon wants to merge 5 commits intosajari:masterfrom gleicon:master

+198-42

Commits on Apr 15, 2021

Commits on Apr 16, 2021

debug cleanup
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Commits on Apr 17, 2021

added TrainQueryWithUserCount to aid with pre-existing datasets
gleicon
committed