⬆️ version bump to v0.3.40

- Update crate and project versions from `v0.3.39` to "\""
- Reorder imports in media_server.rs for consistency
  – Move `error_codes` import before other soap modules in pmoupnp
  – Reorder crate imports to group external and local deps logically (soap_client, then core types)
- Improve Browse response formatting: wrap long expressions for readability
  – Add deterministic sort by `+dc:title` in Browse requests (alphabetical, ascending)
  – Preserve track ordering by NOT sorting items (track number preserved), only containers
- Add explicit sort of container list in content_handler.rs for deterministic output

version.txt

@@ -1 +1 @@
-0.3.39
+0.3.40