CHANGELOG.md in node_mutation-1.13.0 vs CHANGELOG.md in node_mutation-1.13.1

@@ -1,6 +1,10 @@
 # NodeMutation
 
+## 1.13.1 (2023-03-31)
+
+* Remove both whitespaces only when next char is nil
+
 ## 1.13.0 (2023-03-31)
 
 * Adapter `get_start` and `get_end` can parse child node
 * Adapter `get_start_loc` and `get_end_loc` can parse child node