conductor/groupBy.md

A modern & functional JavaScript utility library

```js
// [{id: 1, status: 'VALIDATED', name: 'Achille'}, {id: 2, status: 'REFUSED', name: 'Matthieu'}]
// => [
//     {title: 'VALIDATED', items: [{id: 1, status: 'VALIDATED', name: 'Achille'}]},
//     {title: 'REFUSED', items: [{id: 2, status: 'REFUSED', name: 'Matthieu'}]}
//]
```