Migration to Python 3

Thanks a lot for your work! I’m not sure what the best approach is here, hmm. I hadn’t considered using a script yet. I’m a bit worried that the script will go out of date quickly as the Panda source is modified, though. Does the script make a lot of specific changes?

We don’t currently have a framework set up for unit testing, but I think that it would be a good idea to have one. I have no experience in setting up unit tests for a project like Panda though, so perhaps I would not be the right person to set that up.