0.03  2009-03-29
    Declare dependency on Set::Object::Weak

0.02  2009-03-25
    The interface has changed to:
        use Moose;
        use MooseX::InstanceTracking;
    since we now inject multiple traits.

    We now support make_immutable by injecting a constructor trait, so you can
        have your instances fast *and* big-brothered.