message: Indicate C++ minor version bump needed
  The ability to apply a transform without an object is new functionality.
  Indicate this via a minor version bump.
diff: @@ -14,7 +14,7 @@ different versioning scheme, following the Haskell community's
  ## Unreleased ##
  * IDL core version: TBD
  -* C++ version: TBD (bug fix bump needed)
  +* C++ version: TBD (minor version bump needed)
  * C# NuGet version: TBD
  * `gbc` & compiler library: TBD
  