Function nccl::parse_file_with

pub fn parse_file_with(
    filename: &str, 
    pair: Pair
) -> Result<Pair, Vec<Box<Error>>>

Parses a file, merging the results with the supplied pair. Allows for a kind of inheritance of configuration.

Examples:

let schemas = nccl::parse_file("examples/inherit.nccl").unwrap();
let user = nccl::parse_file_with("examples/inherit2.nccl", schemas).unwrap();
assert_eq!(user["sandwich"]["meat"].keys().len(), 3);
assert_eq!(user["hello"]["world"].keys().len(), 3);