Rotate release notes as part of the 0.58.4 release

.release-notes/0.58.4.md

@@ -0,0 +1,43 @@
+## Fix compiler crash
+
+Previously the following code would cause the compiler to crash. Now it will display a helpful error message:
+
+```pony
+struct FFIBytes
+  var ptr: Pointer[U8 val] = Pointer[U8].create()
+  var length: USize = 0
+
+  fun iso string(): String val =>
+    recover String.from_cpointer(consume FFIBytes.ptr, consume FFIBytes.length) end
+
+actor Main
+  new create(env: Env) =>
+    env.out.print("nothing to see here")
+```
+
+## Add prebuilt ponyc binaries for Ubuntu 24.04
+
+We've added prebuilt ponyc binaries specifically made to work on Ubuntu 24.04.
+
+You can opt into using the Ubuntu binaries when using ponyup by running:
+
+```bash
+ponyup default ubuntu24.04
+```
+
+## Fix generation of invalid LLVM IR
+
+Previously, this code failed at LLVM module verification. Now, with this change, it's fixed by stopping the generation of `ret` instructions after terminator instructions:
+
+```pony
+class Foo
+  new create(a: U32) ? =>
+    error
+
+actor Main
+  new create(env: Env) =>
+    try
+      let f = Foo(1)?
+    end
+```
+

.release-notes/next-release.md

@@ -1,43 +0,0 @@
-## Fix compiler crash
-
-Previously the following code would cause the compiler to crash. Now it will display a helpful error message:
-
-```pony
-struct FFIBytes
-  var ptr: Pointer[U8 val] = Pointer[U8].create()
-  var length: USize = 0
-
-  fun iso string(): String val =>
-    recover String.from_cpointer(consume FFIBytes.ptr, consume FFIBytes.length) end
-
-actor Main
-  new create(env: Env) =>
-    env.out.print("nothing to see here")
-```
-
-## Add prebuilt ponyc binaries for Ubuntu 24.04
-
-We've added prebuilt ponyc binaries specifically made to work on Ubuntu 24.04.
-
-You can opt into using the Ubuntu binaries when using ponyup by running:
-
-```bash
-ponyup default ubuntu24.04
-```
-
-## Fix generation of invalid LLVM IR
-
-Previously, this code failed at LLVM module verification. Now, with this change, it's fixed by stopping the generation of `ret` instructions after terminator instructions:
-
-```pony
-class Foo
-  new create(a: U32) ? =>
-    error
-
-actor Main
-  new create(env: Env) =>
-    try
-      let f = Foo(1)?
-    end
-```
-