Rotate release notes as part of the 0.5.0 release

Author: ponylang-main

.release-notes/0.5.0.md

@@ -0,0 +1,7 @@
+## Fix connections closed mid-transfer by the idle timeout
+
+A connection could be closed by its idle timeout while it was still actively transferring data to a slow peer. A large update draining slowly to a slow client looked idle even though data was still moving, so it was closed mid-transfer. A connection is now closed by the idle timeout only when no data has moved in either direction for the timeout.
+
+## Drop support for Windows 10
+
+Building livery for Windows now requires ponyc 0.66.0 or later and Windows 11 or Windows Server 2022 or later. Windows 10 is no longer supported. Non-Windows platforms are unaffected.

.release-notes/next-release.md

@@ -1,7 +0,0 @@
-## Fix connections closed mid-transfer by the idle timeout
-
-A connection could be closed by its idle timeout while it was still actively transferring data to a slow peer. A large update draining slowly to a slow client looked idle even though data was still moving, so it was closed mid-transfer. A connection is now closed by the idle timeout only when no data has moved in either direction for the timeout.
-
-## Drop support for Windows 10
-
-Building livery for Windows now requires ponyc 0.66.0 or later and Windows 11 or Windows Server 2022 or later. Windows 10 is no longer supported. Non-Windows platforms are unaffected.