We create many `useDebugValue` helpers, loggers and so one now, so we can feel less pain.

What matter (**Updated**)
- previewing complex values brifely like chrome devtools does it for arrays, sets, maps, objects,,,

I [wrote related twit](https://twitter.com/mxtnr/status/1178271362890240001) recently with one of my DebugValue helpers. screenshot out here:
<img width="556" alt="Screenshot 2019-09-29 at 14 01 53" src="https://user-images.githubusercontent.com/6201068/66700775-5648bf80-ecfd-11e9-93fe-089d451bcffa.png">
_my named hooks currently require a `label` option unless react babel cannot transform name of variable automatically_
const {id, shouldHaveLegacyContext} = ids[i];
      await utils.actAsync(
        () =>
          TestRenderer.create(
            <Contexts
              defaultSelectedElementID={id}
              defaultSelectedElementIndex={0}>
              <React.Suspense fallback={null}>
                <Suspender
                  target={id}
                  shouldHaveLegacyContext={shouldHaveLegacyContext}
                />
              </React.Suspense>
            </Contexts>,
          ),
        false,
      );
    }
    done();
  });
  it('should poll for updates for the currently selected element', async done => {
    const Example = () => null;
    const container = document.createElement('div');
    await utils.actAsync(
      () => ReactDOM.render(<Example a={1} b="abc" />, container),
      false,
    );
    const id = ((store.getElementIDAtIndex(0): any): number);
    let inspectedElement = null;
    function Suspender({target}) {