Add changes entry about R attribute fix
diff --git a/CHANGES.current b/CHANGES.current
index 587d91e..2450df0 100644
--- a/CHANGES.current
+++ b/CHANGES.current
@@ -7,6 +7,15 @@
 Version 4.0.2 (in progress)
 ===========================
 
+2020-01-30: richardbeare
+            #1511 [R] Fix bug wrapping functions. These were previously incorrectly wrapped as if
+            they were variables. This happened when 'get' or 'set' was in the name of the function
+            or method, but sometimes also in some other circumstances. If you were using R
+            attribute syntax to access these methods, you'll need to switch to calling them as R
+            methods.
+
+            *** POTENTIAL INCOMPATIBILITY ***
+
 2020-01-24: etse-dignitas, wsfulton
             #1533 [C#, D, Java] Fix upcasting for shared_ptr's of templated types.