Add dates to base, ghc-prim changelogs

bgamari · mpickering · commit a9baafacc0c7 · 2022-08-31T13:26:52.000+01:00
diff --git a/libraries/ghc-prim/changelog.md b/libraries/ghc-prim/changelog.md
@@ -21,7 +21,7 @@
 - The `threadLabel#` primop was added, allowing the user to query the label of
   a given `ThreadId#`.
 
-## 0.9.0
+## 0.9.0 *August 2022*
 
 - Shipped with GHC 9.4.1
 
