Backport (some?) new commits from blocker/python-scriptures

[mpenning]

I just started using this; nicely done!

FYI, blocher/python-scriptures introduced new features, such as "support for non-contiguous passages" commit ref.

At least some of these features would be nice to back-port into your repo and update the release on pypi.

If you'd like help with a PR for this, please feel free to ping me