Fixed version check to encompass Python 3.10

[Axe319]

Fixed version check to also encompass 3.10. The prior check to see if notebook was required was equivalent to '1' < '5' when the Python version was 3.10 or greater.

edit: FIxes #173

[mwcraig]

Thanks @Axe319 -- can you please also add yourself to the list of contributors in CONTRIBUTOERS.md?

We'll need to let the tests run to completion but your change looks good to me!

[Axe319]

No problem! I saw it pop up on Stack Overflow and it looked like an easy fix. I updated the CONTRIBUTORS.md.

[mwcraig]

Thanks again @Axe319 !