API idea: object instead of <Fetch/> for configuring requests

I was thinking people might find it weird to pass a `` as a prop to ``. Maybe it would be less weird if they passed the props as an object instead?

With Fetch:

```jsx
function thing() {
return (
}
render(({ status, data }) => {
{status.pending && }
{status.failed && }
{status.succeeded && }
} />
);
}
```

with object props:

```jsx
function thing() {
return (
{
{status.pending && }
{status.failed && }
{status.succeeded && }
} />
);
}
```

It would do the exact same thing under the hood, but people may prefer it. You could also pass `` if you wanted.

Start by reviewing the existing and request APIs and how the request prop is handled. Determine whether object props can produce the same behavior while preserving support, then verify the examples for both forms.

Written by the indexing model from the issue text.