Add support for simpler (Callable) hooks (issue #2917)
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index a2250df..423755b 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -509,6 +509,7 @@
 
    -  :doc:`Hooks Library <general/hooks>` changes include:
 
+      -  Added support for closure hooks (or anything that ``is_callable()`` returns TRUE for).
       -  Renamed method ``_call_hook()`` to ``call_hook()``.
       -  Class instances are now stored in order to maintain their state.