Switch to putting radio targets in the global settings instead of the context tree.

src/parser/document.rs

@@ -95,8 +95,9 @@ fn document_org_source<'b, 'g, 'r, 's>(
             .map(|rt| &rt.children)
             .collect();
         if !all_radio_targets.is_empty() {
-            let parser_context = ContextElement::RadioTarget(all_radio_targets);
-            let parser_context = context.with_additional_node(&parser_context);
+            let mut new_global_settings = context.get_global_settings().clone();
+            new_global_settings.radio_targets = all_radio_targets;
+            let parser_context = context.with_global_settings(&new_global_settings);
             let (remaining, document) = _document(&parser_context, input)
                 .map(|(rem, out)| (Into::<&str>::into(rem), out))?;
             return Ok((remaining.into(), document));