message: Derive: add #[automatically_derived] tag for impls
diff: @@ -31,6 +31,7 @@ pub fn derive(input: TokenStream) -> TokenStream {
  #[allow(dead_code, unused_variables, unused_attributes)]
  const #dummy: () = {
  extern crate hdf5_types as _h5t;
  + #[automatically_derived]
  unsafe impl #impl_generics _h5t::H5Type for #name #ty_generics #where_clause {
  #[inline]
  fn type_descriptor() -> _h5t::TypeDescriptor {
  