Add blurt decorator.

[perrygoy]

Speaking of Loudly (#72), maybe we also would like to just log one specific Action or Task, but none of the things it does inside of it. Something that will keep the guarantee from Loudly that it will be narrated, but doesn't cascade down to included narratables.

Let's add a cousin to beat, blurt! blurt will do essentially what beat does, but take advantage of the same "direct-to-adapters" feature that Loudly will use to skirt the kinks!