Old versions of Python

[ntravis]

If you want to maintain support for older versions of Python, you could change the download source for those versions to python.org directly instead of the seemingly now missing files from the TravisCI. Is that something you care about, or do you want to drop support for these older versions that are no longer supported overall?

Example: Python 3.2.6 - https://www.python.org/downloads/release/python-326/

Happy to PR either way @danielfm