Member CppUnits::Literals::operator "_" (long double magnitude): We need a better way to organize the unit literals than just a wall of possible units
Member CppUtils::Math::linearLeastSquaresFitting (IteratorX x_begin, IteratorX x_end, IteratorY y_begin, IteratorY y_end): This is a complicated function and would probably lend itself well to a functor class
Member CppUtils::Math::quadraticLeastSquaresFitting (IteratorX x_begin, IteratorX x_end, IteratorY y_begin, IteratorY y_end): This is a complicated function and would probably lend itself well to a functor class
Class CppUtils::Math::Vector3D< T, typename >: Add arithmetic operators (possibly using expression templates)