Code review comment for lp://staging/~gary/launchpad/move-events-to-filters

> A worry: target.addSubscription did result in a subscription that had a level
> of NOTHING. We never exposed that, to my knowledge, instead relying publicly
> on addBugSubscription, which always explicitly set a level of COMMENTS. Now,
> this branch creates subscriptions without filters, which means
> addBugSubscription has the same result, but addSubscription does not. I don't
> think it is an issue, but I'd like a sanity check from an expert (gmb? :-D )

I don't think that's going to be an issue (and I'd like to think that tests will blow up if it is).