news.md in grntest-1.6.7

- old
+ new

@@ -1,6 +1,13 @@
 # News
 
+## 1.6.7: 2024-02-05
+
+### Improvements
+
+  * Added benchmark mode. It uses Google Benchmark compatible JSON
+    output.
+
 ## 1.6.6: 2023-10-24
 
 ### Improvements
 
   * arrow: Removed a needless new line.