Add history entry.

SanderSpies · SanderSpies · commit 336a70b6a660 · 2023-03-06T09:38:20.000+01:00
diff --git a/HISTORY.md b/HISTORY.md
@@ -1,6 +1,7 @@
 ## 3.9 (unreleased)
 
 - Fix missing patterns around contraint pattern (a pattern with a type annotation).
+- Make &, &&, |, ||, ++, and :: operators left associative.
 
 ## 3.8.2
 
