Minimum data definition

[diberry]

It would be great to add the minimal data object:

{
    order: 123,              //number
    title: "Buy milk",      //string
    completed: true,       //boolean
}

I see the following fields in some of the backend API variations and not sure if they just aren't in tests in this project or if they are 1-offs of that particular version:

{
Id: 1, // number
Url: "",//string
}