This is a schema change so which number am I meant to be incrementing? Or are we going to try to say that we only really need to change the schema version once per week?

I thought there was a Registry-wide version number we could increment for this kind of change, but now I can't find it.  Maybe Andy Salnikov can.  If not, we should at least think about whether it add one or whether we should just increment the versions of all of the manager implementations in cases like this.

For the changes in the tables that are controlled by the managers the schema version for corresponding manager needs to be incremented. If there are tables that do not belong to any manager then we need to introduce separate version for those tables (or add a "virtual" manager for those tables). Having one global version in addition to per-manager version is complicated, I'd like to avoid that situation. This particular change is not tied to any specific manager, so it may not be trivial to decide which managers are affected, it may be easier to increment all of them? Or I can look at the schema and give you the list of managers that are affected.

At this point it's probably easier to increment them all and not worry about it too much.