.format mismatch with URL

## Expected Behavior
```js
require('url').format(new URL('http://hello/world#'))
// "http://hello/world#"
```
## Actual Behavior
```js
require('native-url').format(new URL('http://hello/world#'))
// "http://hello/world"
```
## Specifications

- Version: 0.3.4
- Platform: node.js
