Merge branch 'master' into master

graph/connected_components_with_dsu.cpp

@@ -112,4 +112,4 @@ static void test() {
 int main() {
     test();  // Execute the tests
     return 0;
-}
+}

machine_learning/ordinary_least_squares_regressor.cpp

@@ -436,7 +436,7 @@ int main() {
     std::vector<float> Y(N);
 
     std::cout
-        << "Enter training data. Per sample, provide features and one output."
+        << "Enter training data. Per sample, provide features ad one output."
         << std::endl;
 
     for (size_t rows = 0; rows < N; rows++) {