Feature request: option to sort the nodes

[stla]

Hello,

I have an array like this:

["Africa/Abidjan", "Africa/Accra", "America/Argentina/Cordoba", "America/Argentina/Jujuy"]

I am able to convert it to an array of nodes:

[
  {
    label: "Africa",
    value: "africa",
    children: [
      {
        label: "Abidjan",
        value: "abidjan"
      }, 
      {
        label: "Accra",
        value: "acrra"
      }
    ]
  }, 
  {
    label: "America", 
    value: "america",
    children : ......
  }
]

except that I loose the original order.

So it would be nice to have an option to sort the nodes by their label (as in jsTree), or by an optional key order.