relnotes/next

--- a/relnotes/next	Mon Jul 08 13:10:34 2019 -0700
+++ b/relnotes/next	Sun Jul 07 23:04:55 2019 -0700
@@ -73,3 +73,7 @@
    `addunfinished()` in `state` module.
 
  * `cmdutil.checkunfinished()` now includes detection for merge too.
+
+ * We used to automatically attempt to make extensions compatible with
+   Python 3 (by translating their source code while loading it). We no
+   longer do that.