ENH: Update Python version dependencies in setup.py
ENH: Update Python version dependencies in setup.py

thewtex/TubeTK,thewtex/TubeTK,thewtex/TubeTK,aylward/ITKTubeTK,aylward/ITKTubeTK,thewtex/TubeTK,aylward/ITKTubeTK,aylward/ITKTubeTK