Fix changelog.

Author: Kircheneer

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Changelog
 
-## v1.7.0 - 2022-10-03
+## v1.7.0 - 2022-11-03
 
 ### Changed
 
@@ -10,6 +10,7 @@
 ### Added
 
 - #174 - Add methods to load data from dictionary and enable tree traversal
+- #174 - Add a get_or_none method to the DiffSync class
 - #168 - Add 'skip' counter to diff.summary()
 - #169/#170 - Add documentation about model processing order
 - #121/#140 - Add and configure renovate