update changelog

Author: dannyvankooten

CHANGELOG.md

@@ -1,10 +1,11 @@
 # Changelog
 
-### 1.6.5 - In development
+### 1.6.5 - Feb 10, 2025
 
 - Add importer for data from Burst Statistics.
 - Allow passing "false" and "no" to `monthly` query parameter in REST endpoint.
 - Optimize PHP execution time for plugin bootstrapping code by aggresively lazy loading code that only runs on very specific requests. From 0.05 ms to 0.03 ms (!) with opcache or 1.44 ms to 0.54 ms without opcache for general requests.
+- Minor code improvements to classes responsible for aggregating data from buffer file into permanent storage.
 
 
 ### 1.6.4 - Jan 25, 2025