jsonref dereferences JSONSchema $ref attributes and creates a new dereferenced schema.

Dereferencing is normally done by a JSONSchema validator in the process of validation, but it is sometimes useful to do this independent of the validator for tasks like:

• Analysing a schema programatically to see what field there are.
• Programatically modifying a schema.
• Passing to tools that create fake JSON data from the schema.
• Passing the schema to form generation tools.

Example: ``` use serde_json::json; use jsonref::JsonRef;

let mut simple_example = json!( {"properties": {"prop1": {"title": "name"}, "prop2": {"$ref": "#/properties/prop1"}} } );

let mut jsonref = JsonRef::new();

jsonref.derefvalue(&mut simpleexample).unwrap();

let dereffedexpected = json!( {"properties": {"prop1": {"title": "name"}, "prop2": {"title": "name"}} } ); asserteq!(simpleexample, dereffedexpected) ```

Note: If the JSONSchema has recursive $ref only the first recursion will happen. This is to stop an infinate loop.