Reworded CHANGELOG.md

Author: coot

io-classes/CHANGELOG.md

@@ -2,8 +2,6 @@
 
 ### next version
 
-* Support ghc-9.12
-
 ### Breaking changes
 
 * Added `threadLabel` to `MonadThread`
@@ -19,6 +17,7 @@
 
 * Added monad transformer instances for `MonadInspectSTM` & `MonadTraceSTM`
   type classes.
+* Support ghc-9.12
 
 ### 1.7.0.0