Inline. Marks the version a thing arrived in — usable inside a heading.

## Usage

### Retries :since{version="v2.0.0"}

```mdc
### Retries :since{version="v2.0.0"}
```

## API

### Props

| Prop      | Type     | Default | Notes                     |
| :-------- | :------- | :------ | :------------------------ |
| `version` | `string` | —       | Printed as written        |

## Notes

It hangs off the version model rather than repeating it: what the badge says is
the version a thing ARRIVED in, which is a fact about the API and not about the
page it is documented on — so it stays correct in every version of the docs that
carries the sentence.

For anything else, `:badge[…]` calls the theme's own Badge directly; MDC resolves
any globally registered component by name.