v0.1.3 needs tagging

@Nanonid any chance of tagging v0.1.3:

```
$ git tag v0.1.3 e64af6c
$ git push origin --tags
```

should work and will enable the use of:

```$ npm install Nanonid/rison#v0.1.3```

instead of

```$ npm install Nanonid/rison#e64af6c```

Many thanks
