update changelog to reflect breaking changes

CHANGELOG.md

@@ -9,17 +9,17 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 
 ## [0.2.0] - 2024-04-19
+### ⚠️ Breaking Changes
+- renamed the score metric from `ntppool_score` to `ntppool_server_score`
+- removed unneccessary `server` label in metrics
+
 ### Added
 - added in-memory cache to reduce API strain (#4)
 
 ### Changed
-- renamed the score metric from `ntppool_score` to `ntppool_server_score`
 - fixed some debug logs
 - update readme to reflect new repo
 
-### Removed
-- unneccessary `server` label in metrics
-
 ## [0.1.1] - 2024-04-17
 ### Fixed
 - Fix nil references when http request fails (#2)