Changing isBinary() method so that it returns true if the column is constant 0 or constant 1 as well.
Changing isBinary() method so that it returns true if the column is constant 0 or constant 1 as well.

h2oai/h2o-dev,mathemage/h2o-3,h2oai/h2o-3,h2oai/h2o-dev,h2oai/h2o-3,spennihana/h2o-3,h2oai/h2o-3,jangorecki/h2o-3,h2oai/h2o-dev,mathemage/h2o-3,michalkurka/h2o-3,mathemage/h2o-3,michalkurka/h2o-3,jangorecki/h2o-3,spennihana/h2o-3,h2oai/h2o-3,h2oai/h2o-dev,michalkurka/h2o-3,h2oai/h2o-3,jangorecki/h2o-3,h2oai/h2o-3,mathemage/h2o-3,jangorecki/h2o-3,spennihana/h2o-3,h2oai/h2o-dev,mathemage/h2o-3,h2oai/h2o-dev,spennihana/h2o-3,jangorecki/h2o-3,mathemage/h2o-3,h2oai/h2o-3,michalkurka/h2o-3,spennihana/h2o-3,jangorecki/h2o-3,spennihana/h2o-3,michalkurka/h2o-3,jangorecki/h2o-3,mathemage/h2o-3,h2oai/h2o-3,michalkurka/h2o-3,michalkurka/h2o-3,h2oai/h2o-dev,spennihana/h2o-3