DOC: add a release note

mattip · mattip · commit 1cc89e76cfbe · 2024-07-03T15:00:40.000+03:00
diff --git a/doc/release/upcoming_changes/26842.c_api.rst b/doc/release/upcoming_changes/26842.c_api.rst
@@ -0,0 +1,5 @@
+Many shims removed from npy_3kcompat.h
+--------------------------------------
+Many of the old shims and helper functions were removed from
+``npy_3kcompat.h``. If you find yourself in need of these, vendor the previous
+version of the file into your codebase.
