Test against Python 3.10

[jakebeal]

We are currently running up through Python 3.9. Some things that were deprecated have finally vanished in Python 3.10, and the scripts may not work correctly for that version.

[mburridge96]

Biopython seems to have some build issues with python3.10 on mine - x86_64-linux-gnu-gcc error

It doesn't seem to be used anywhere though, so should biopython be removed from requirements? Or am I missing something?

EDIT: Solved that, need both build-essential and python dev installed.

[noahsprent]

How does this issue relate to #180? Can we test for 3.7-3.10 like SBOL-utilities?

[jakebeal]

Yes, we could upgrade to a matrix build. The SBOL utilities script shows how to do this.

[jakebeal]

Doing a matrix build would simultaneously address both this and #180