Deprecate estimators#66

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TomAugspurger wants to merge 2 commits intodask:mainfrom

TomAugspurger:move

Commits on Nov 16, 2017

Deprecate estimator API, move it dask-ml.
TomAugspurger
committed

Commits on Mar 8, 2019

Merge remote-tracking branch 'upstream/master' into move
TomAugspurger
committed