Fix new clippy warnings (#2760)

* Fix new clippy warnings

* Fork serde-hjson and bring in

* Fork serde-hjson and bring in

* Fix clippy lint again

crates/nu-json/src/lib.rs

@@ -0,0 +1,16 @@
+pub use self::de::{
+    from_iter, from_reader, from_slice, from_str, Deserializer, StreamDeserializer,
+};
+pub use self::error::{Error, ErrorCode, Result};
+pub use self::ser::{to_string, to_vec, to_writer, Serializer};
+pub use self::value::{from_value, to_value, Map, Value};
+
+#[macro_use]
+mod forward;
+
+pub mod builder;
+pub mod de;
+pub mod error;
+pub mod ser;
+mod util;
+pub mod value;