[ZODB-Dev] Is anyone *actually* using ZODB versions?

[Tim Peters]

[Tim Peters]
>> ...
>> versions complicated the MVCC work too, of course.

[Dieter Maurer]
> With a "history" based implementation, you get Version support
> for MVCC at no cost (as "history" already supports "Version"s).

Jeremy didn't use a history-based implementation.  It's simply a fact that
versions complicated the actual MVCC implementation.  At one point we
decided it would be more work to take versions out than to finish repairing
them, though.