Rebase existing repos on this occasionally.

[bethac07]

Presumably, as we improve things here, it would be nice to let those things trickle down.

This will be easiest for DOZC and later repos that come from the template - this StackOverflow shows how to do it (presumably it will make some merge conflicts, but those can be resolved).

For DCP/DF/DDP, we can for each make a choice (need not be the same choice for each) - 1) rename the existing repo and re-create fresh from the template or 2) incorporate upgrades manually. For DDP, and arguably even DF, they aren't in wide use which favors 1 (more work up front and lose original commit trail without visiting the old archived repo, but less work ongoing); DCP the choice is harder, but I still think for the sake of easy maintainability we may want to do it anyway.

[ErinWeisbart]

After conversation today:
Given overwriting of history that sounds like it will occur following the rebasing in the StackOverflow question, we have decided to test this out on a not-often-used repo (DDP) before actually deciding on a strategy for the repos we are actually using (and care about history in).