message: [crispy] reference: applied some tips from clang-tidy, i.e. move ctor/= should be noexcept.
diff: @@ -22,9 +22,9 @@ public:
  constexpr reference(std::reference_wrapper<T> _ref) noexcept : ref_{&_ref.get()} {}
  reference(reference const&) = default;
  - reference(reference&&) = default;
  + reference(reference&&) noexcept = default;
  reference& operator=(reference const&) = default;
  - reference& operator=(reference&&) = default;
  + reference& operator=(reference&&) noexcept = default;
  constexpr reference& operator=(T& _ref)
  {
  