Move extension traits into top level ext module
diff --git a/src/lib.rs b/src/lib.rs
index 5c60a70..6c8e915 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -438,6 +438,8 @@
 
 #[cfg(feature = "parsing")]
 pub mod buffer;
+#[cfg(feature = "parsing")]
+pub mod ext;
 pub mod punctuated;
 #[cfg(feature = "parsing")]
 pub mod synom;