debugging.py: do not use types.ClassType (which is for old-style classes only, and doesn't work in Python3)
debugging.py: do not use types.ClassType (which is for old-style classes only, and doesn't work in Python3)

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