Add solution for 2016 Day 8

src/common/lib/Array2D.h

@@ -508,7 +508,8 @@ struct Array2D
       {
         os << array2D.Get(x, y);
       }
-      os << std::endl;
+      if (y != array2D.height - 1)
+        os << std::endl;
     }
     return std::cout;
   }