Move Cursor and TokenBuffer into buffer module
diff --git a/src/attr.rs b/src/attr.rs
index 10868c2..aa578c2 100644
--- a/src/attr.rs
+++ b/src/attr.rs
@@ -324,7 +324,7 @@
 #[cfg(feature = "parsing")]
 pub mod parsing {
     use super::*;
-    use cursor::Cursor;
+    use buffer::Cursor;
     use parse_error;
     use synom::PResult;
     use proc_macro2::{Literal, Spacing, Span, TokenNode, TokenTree};