opts.changes.{val}.changed is not always right

In endeavors, if I leave the producer consultant, producer, decider, and validator fields alone and log out the following on an update:

```
console.log('consultants:', c.consultants.changed, c.consultants.then.key, c.consultants.now.key);
console.log('producer:', c.producer.changed, c.producer.then.key, c.producer.now.key);
console.log('decider:', c.decider.changed, c.decider.then.key, c.decider.now.key);
console.log('validator:', c.validator.changed, c.validator.then.key, c.validator.now.key);
```

this is what I get:

```
consultants: true undefined undefined
producer: true undefined member!00000003
decider: true undefined member!00000006
validator: true undefined member!00000003
```

which doesn't make any sense.