Replace serde_derive with derive feature of serde

Author: stevenroose

Cargo.toml

@@ -14,8 +14,7 @@ readme = "README.md"
 bitcoin = { version = "0.23", features = ["use-serde"] }
 rand = "0.7"
 rust-crypto = "0.2"
-serde = "1"
-serde_derive = "1"
+serde = { version = "1", features = ["derive"] }
 
 [dev-dependencies]
 bitcoin = { version = "0.23", features = ["use-serde", "bitcoinconsensus"] }

src/lib.rs

@@ -24,9 +24,8 @@
 pub extern crate bitcoin;
 pub extern crate crypto;
 extern crate rand;
-extern crate serde;
 #[macro_use]
-extern crate serde_derive;
+extern crate serde;
 
 #[cfg(test)]
 extern crate serde_json;