[Zope] Adding another base class to an existing ZClass

[Steve Jibson]

I've spent many hours working on a ZClass (with multiple sub-zclasses,
etc.), and now I've decided that I should have inherited from Folder as
well as ObjectManager when I created the ZClass.  Is there a way to add
a base class to the base class list of an existing ZClass, or do I need
to start all over?

Thanks,

Steve