Better support for default value

Hello, first off, thanks you so much for your very good library. I'm having some minor troubles with default values.

Description

I have to make database searches with autocomplete for user. I want the autocomplete to return me an id, but to search by username, so I have to carry an object with {name, value}, which already works great.

The problem arises when I want to select a default user.

Code

async function issueWithDefault(){

    const inquirer = require("inquirer");
    inquirer.registerPrompt(
      "autocomplete",
      require("inquirer-autocomplete-prompt")
    );

    const dummyDB = [
        {username:"joe",_id:1},
        {username:"mikael",_id:2},
        {username:"roy",_id:3},
        {username:"dennis",_id:4},
        {username:"edward",_id:5},
        {username:"john",_id:6},
        {username:"michelle",_id:7},
        {username:"johnatan",_id:8},
    ];

    //Search dummyDB, returns list of {name,value}.
    const source = async function(answersSoFar,input){
          const user =  await dummyDB.filter(u => new RegExp(".*"+input+".*").exec(u.username))
          return user.map(u=>({name:u.username,value:u._id}))
    }

    const promptObj = {
        type: "autocomplete",
        default:4,
        name: "user",
        message: "Type a username",
        source: source
      }

     const rslt = await inquirer.prompt([promptObj]);

     console.log(rslt);
}

issueWithDefault();

The prompt shows the id, not the username (which is expected since I only entered the id as a default value, see code above, default:4).

? Type a username (4) (Use arrow keys or type to search)
  No results...

Proposal

The default should be able to take an object with {value, name} keys so that prompt will be able to show the username instead of an ID.

    const promptObj = {
        type: "autocomplete",
        default:{name:"dennis",value:4},
        name: "user",
        message: "Type a username",
        source: source
      }

Current behaviour

? Type a username ([object Object]) (Use arrow keys or type to search)
  No results...

Expected behaviour

? Type a username (dennis) (Use arrow keys or type to search)
  No results...

mokkabonna / inquirer-autocomplete-prompt