Rotate release notes as part of the 0.4.0 release

Author: ponylang-main

.release-notes/0.4.0.md

@@ -0,0 +1,8 @@
+
+## Fix potential connection hang when timer event subscription fails
+
+On some platforms, if the operating system cannot allocate resources for a connection timer (e.g., ENOMEM on kqueue or epoll), connections could hang silently instead of reporting an error. Timer subscription failures are now detected and reported as connection failures.
+
+## Require ponyc 0.63.1 or later
+
+github_rest_api now requires ponyc 0.63.1 or later. Older ponyc versions are no longer supported.

.release-notes/next-release.md

@@ -1,8 +0,0 @@
-
-## Fix potential connection hang when timer event subscription fails
-
-On some platforms, if the operating system cannot allocate resources for a connection timer (e.g., ENOMEM on kqueue or epoll), connections could hang silently instead of reporting an error. Timer subscription failures are now detected and reported as connection failures.
-
-## Require ponyc 0.63.1 or later
-
-github_rest_api now requires ponyc 0.63.1 or later. Older ponyc versions are no longer supported.