Remove serde_derive from the dependencies.

Cargo.toml

@@ -26,6 +26,5 @@ arrayref = "^0.3"
 #log = { version = "^0.4", features = ["max_level_trace", "release_max_level_info"] }
 log = { version = "^0.4", features = ["max_level_trace", "release_max_level_trace"] }
 
-serde = "^1.0"
-serde_derive = "^1.0"
+serde = { version = "^1.0", features = ["derive"] }
 bincode = "^1.1"

src/cell_space.rs

@@ -5,6 +5,8 @@ use std::marker;
 use std::ops::Index;
 
 use ironsea_index::Record;
+use serde::Deserialize;
+use serde::Serialize;
 
 type Cell<T> = Vec<T>;
 

src/lib.rs

@@ -4,9 +4,6 @@ extern crate log;
 #[macro_use]
 extern crate arrayref;
 
-#[macro_use]
-extern crate serde_derive;
-
 mod cell_space;
 mod morton;
 mod sfc;

src/sfc.rs

@@ -7,14 +7,14 @@ use std::io;
 use std::iter::FromIterator;
 use std::ops::Index;
 
-use serde::de::DeserializeOwned;
-use serde::Serialize;
-
 pub use ironsea_index::IndexedDestructured;
 pub use ironsea_index::Record;
 pub use ironsea_index::RecordFields;
 use ironsea_store::Load;
 use ironsea_store::Store;
+use serde::de::DeserializeOwned;
+use serde::Deserialize;
+use serde::Serialize;
 
 use super::cell_space::CellSpace;
 use super::morton::MortonCode;