write-json

Simple {dependency,trait,macro}-less JSON serialization

```rust let mut buf = String::new();

{ let mut obj = write_json::object(&mut buf); obj.string("name", "Peter").number("favorite number", 92.0); obj.array("films") .string("Drowning By Numbers") .string("A Zed & Two Noughts"); obj.null("suitcase"); }

assert_eq!( buf, r#"{"name":"Peter","favorite number":92,"films":["Drowning By Numbers","A Zed & Two Noughts"],"suitcase":null}"# ) ```