D4t4

WIP - work in progress, use at your own risk

A JSON superset

Features

JSON-compatible
Objects & arrays may have trailing comma
Object keys may not need quotes
Single & multiline comments are allowed
Strings may use double and/or single quotes
Values can be referenced from other parts of the object tree

Example

```rust use d4t4::parse;

fn main() {
    let data = r#"{
       /*
           Look how nice, we can separate re-useable data!
       */
       padding: {
           s: '1px',
           m: '2px',
           l: '3px', // note: triling comma
       },
       color: {
           red: '#fed7d7',
           green: '#c6f6d5',
           blue: '#bee3f8', # note: found another one!
       },
       objects: [
           {
               border: "1px solid &{color.red}",
               padding: "&{padding.s}",
           },
           {
               border: "1px solid &{color.green}",
               padding: "&{padding.m}",
           },
           {
               border: "1px solid &{color.blue}",
               padding: "&{padding.l}",
           },
       ]
    }"#;

    let json = parse(data).ok().unwrap();
    assert_eq!(json["objects"][0]["padding"], "1px");
    assert_eq!(json["objects"][1]["padding"], "2px");
    assert_eq!(json["objects"][2]["padding"], "3px");
}

```

Parse json:

```rust use d4t4::parse;

fn main() {
    let json = r#"{
        "number": 100,
        "null": null,
        "true": true,
        "object": {},
        "array": [1,2,3],
        "unicode": "\u1234",
        "string": "check out the tests directory if you want to see more",
    }"#;

    assert!(parse(json).is_ok());
}

```

Contributions

I would love to get some feedback if you find my little project useful. Please feel free to highlight issues with my code or submit a PR in case you want to improve it. Note that the goal so far hasn't been performance, rather on functionality and api.