message: moved setup_view_column_() to be private
diff: @@ -584,9 +584,6 @@ public: // Operators
  DataFrame &rhs,
  sort_state already_sorted = sort_state::not_sorted);
  - template<typename T, typename ITR>
  - void setup_view_column_(const char *name, Index2D<ITR> range);
  -
  protected:
  template<typename T1, typename T2>
  @@ -636,6 +633,9 @@ private:
  void operator() (const T &vec);
  };
  + template<typename T, typename ITR>
  + void setup_view_column_(const char *name, Index2D<ITR> range);
  +
  template<typename ... types>
  struct view_setup_functor_ : DataVec::template visitor_base<types ...> {
  @@ -654,6 +654,9 @@ private:
  void operator() (T &vec);
  };
  + template<typename ... types>
  + friend struct view_setup_functor_;
  +
  template<typename ... types>
  struct add_col_functor_ : DataVec::template visitor_base<types ...> {
  