Upgrade to pyo3 0.3.1, part 3

konstin · konstin · commit 646da0678f5f · 2018-07-19T00:00:44.000+02:00
diff --git a/example_tomlgen/hello/english/lib.rs b/example_tomlgen/hello/english/lib.rs
@@ -1,4 +1,4 @@
-#![feature(proc_macro)]
+#![feature(use_extern_macros)]
 
 extern crate pyo3;
 
diff --git a/example_tomlgen/hello/french/lib.rs b/example_tomlgen/hello/french/lib.rs
@@ -1,4 +1,4 @@
-#![feature(proc_macro)]
+#![feature(use_extern_macros)]
 
 extern crate pyo3;
 
