[Proposal] Array Items on Separate Lines Fixer

I often find myself putting array items on separate lines. Specially when there are a lot of items in the arrays. Maybe we could add a fixer for that? Maybe it exists already? Example below:

// Before
protected $dates = ['deleted_at', 'ended_at', 'started_at'];

// After
protected $dates = [ 
    'deleted_at', 
    'ended_at', 
    'started_at'
];

What do you think?