Send version with update

src/AutoUpdate.cake

@@ -125,6 +125,7 @@
                              output-directory (* (const char))
                              new-file-to-use-out-buffer (* char)
                              new-file-to-use-out-buffer-size size_t
+                             new-version-out (* int)
                              &return bool)
   (var update-metadata auto-update-metadata (array 0))
   (unless (auto-update-get-latest-version-metadata
@@ -183,6 +184,7 @@
 
   (snprintf new-file-to-use-out-buffer new-file-to-use-out-buffer-size "%s/%s"
             version-output-directory (path platform-download > file-to-use))
+  (set (deref new-version-out) (field update-metadata latest-version))
   (free-introspect-struct-fields auto-update-metadata--metadata (addr update-metadata) free)
   (return true))