Neo stores can be configured with an array of `Neo.collection.Sorter`. 

    {
        ntype: 'store',
        sorters: [{
            property: 'prop',
            direction: 'ASC' // Anything else is descending
        }]
    }



    {
        ntype: 'store',
        sorters: [{
            sortBy: (a, b) => // Quicksort return value -1, 0, 1
        }]
    }