link: depend on language_tags

Author: pietroalbini

Cargo.toml

@@ -25,6 +25,7 @@ bytes = "1"
 mime = "0.3.14"
 sha-1 = "0.10"
 httpdate = "1"
+language-tags = "0.3.2"
 
 [features]
 nightly = []

src/lib.rs

@@ -79,6 +79,7 @@ extern crate bytes;
 extern crate headers_core;
 extern crate http;
 extern crate httpdate;
+extern crate language_tags;
 extern crate mime;
 extern crate sha1;
 #[cfg(all(test, feature = "nightly"))]