Add tests for names and references in src and example blocks.

src/compare/diff.rs

@@ -1549,6 +1549,8 @@ fn compare_example_block<'b, 's>(
     let mut this_status = DiffStatus::Good;
     let mut message = None;
 
+    // TODO: Compare :name
+
     // Compare value
     let contents = get_property_quoted_string(emacs, ":value")?.unwrap_or(String::new());
     if contents != rust.contents {