Fix change log since release was cut

Author: Ericson2314

ChangeLog.md

@@ -1,13 +1,15 @@
 # Revision history for patch
 
+## Unreleased
+
+* Use `commutative-semigroups` for `Commutative`, making `Additive` a
+  deprecated alias.
+
 ## 0.0.6.0 - 2022-06-10
 
 * Add `PatchOrReplacement`, patch which either is some other patch type or a
   new replacement value.
 
- * Use `commutative-semigroups` for `Commutative`, making `Additive` a
-   deprecated alias.
-
 * Support GHC 9.2
 
 ## 0.0.5.2 - 2022-01-09