Method valueChanged

src/main/java/jace/state/ObjectGraphNode.java:146–154

(State tail)

    }

    public boolean valueChanged(State tail) {
        if (!forceCheck || isDirty()) {
            return isDirty();
        }

        //?? Let's be lazy and just say yes for now.
        return true;

    }

    @Override
    public boolean equals(Object obj) {