should we target a specific version of OpenCOR and make sure everything is consistent?

It would be nice (might be nice?) if we can state at the outset that "this tutorial is based on version X.Y.Z" and then we try to keep the tutorial in sync with each new release. Given limited resources it might not be every release, but perhaps significant releases or times when the tutorial is presented.

We could then maintain a collection of versions of this tutorial?
