Doctrine 1.x and 2 both offer some kind of Versionable support in the form of a separate auditing table that tracks changes over time. However, the versions appear to be intended for per-row use (ie, they all maintain their own version number) instead of database-wide, such as in Hibernate Envers, which gives every row a unique revision number.
Does Doctrine actually provide support for that kind of behavior? I couldn't find anything online to suggest that it does.