Merged 2.1.7 into master (just VERSION changes) by yarikoptic · Pull Request #699 · gitpython-developers/GitPython

I guess just that master diverged from the release tag, that left VERSION stating that current master is 2.1.6 . Detected while observing installation from git master in our datalad travis setup:
https://travis-ci.org/datalad/datalad/jobs/308052470#L1012

This PR just merges 2.1.7 tag back into master, so also git describe --tags provides adequate information about current state of the affairs in master