Doc update

Author: danielaparker

CHANGELOG.md

@@ -25,7 +25,13 @@
 
     - New non-throwing accessor `try_as<T>()` for `basic_json` that return a `std::expected`-like result,
 
-- Breaking changes to staj iterator classes
+- Changes
+
+    - Until now, the reflection traits generated by the convenience macros `JSONCONS_ALL_MEMBER_TRAITS`
+      etc. produced JSON (or other formats) with object names in sorted order. After this release,
+      they will produce JSON, BSON etc. with object names in the order that they appear as macro arguments. 
+
+- Breaking change to staj iterator classes
 
     - Classes `staj_array_view` and `staj_object_view` and corresponding factories `staj_array` 
        and `staj_object` have been removed.