update h2o-flow version to 0.5.0 with... (#684)
update h2o-flow version to 0.5.0 with... (#684)

...new partial dependence plot column selection feature
spennihana/h2o-3,spennihana/h2o-3,h2oai/h2o-3,h2oai/h2o-dev,mathemage/h2o-3,michalkurka/h2o-3,h2oai/h2o-dev,michalkurka/h2o-3,spennihana/h2o-3,michalkurka/h2o-3,spennihana/h2o-3,h2oai/h2o-3,h2oai/h2o-3,spennihana/h2o-3,h2oai/h2o-3,h2oai/h2o-dev,h2oai/h2o-dev,michalkurka/h2o-3,mathemage/h2o-3,h2oai/h2o-3,h2oai/h2o-dev,mathemage/h2o-3,mathemage/h2o-3,mathemage/h2o-3,h2oai/h2o-3,h2oai/h2o-3,h2oai/h2o-dev,michalkurka/h2o-3,spennihana/h2o-3,h2oai/h2o-3,spennihana/h2o-3,michalkurka/h2o-3,h2oai/h2o-dev,michalkurka/h2o-3,mathemage/h2o-3,mathemage/h2o-3