refactor(header): only import langtag macro for tests

seanmonstar · seanmonstar · commit c20395d67683 · 2017-01-23T11:25:01.000-08:00
diff --git a/src/lib.rs b/src/lib.rs
@@ -137,7 +137,7 @@ extern crate num_cpus;
 extern crate traitobject;
 extern crate typeable;
 
-#[macro_use]
+#[cfg_attr(test, macro_use)]
 extern crate language_tags;
 
 #[macro_use]
