New line replacement for std::endl, by Dietmar Kuhl

/** Dietmar Kuhl, the C++ IO and Internationalization expert, wrote this blogpost 
 *  (https://kuhllib.com/2012/01/14/stop-excessive-use-of-stdendl/)
 *  discussing the need to stop overusing `std::endl`. In the blog post, he implemented
 *  this function as a replacement.
 *
 *  While it looks almost exactly the same in use, this function only outputs a
 *  new line character; it does not flush the output stream. In contrast, `std::endl`
 *  both outputs a new character and calls `std::fflush()`.
 *
 *  He also implements this function himself here:
 *  (https://github.com/dietmarkuehl/kuhllib/blob/master/blog/endl.cpp)
 *
 *  I'm remaking it here just in case, but all credit belongs to him.
 *
 */

#include <iostream>

template <typename T, typename Traits>
std::basic_ostream<T, Traits>&
NL (std::basic_ostream<T, Traits>& out)
{
    return out << out.widen('\n');
}


int main()
{
    std::cout << "Testing..." << NL;
}