news.md in grntest-1.6.4

- old
+ new

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 # News
 
+## 1.6.4: 2023-10-21
+
+### Improvements
+
+  * arrow: Added support for metadata normalization.
+
 ## 1.6.3: 2023-09-18
 
 ### Improvements
 
   * reporter: stream: Changed to show worker ID for each test.