Added hide and show of cursor

src/main.cpp

@@ -155,12 +155,17 @@ int main(int argc, const char * argv[]) {
             unsigned long long cur_iter {robinsonizer.total_iterations()};
             unsigned long long prev_iter {0};
 
+            // hide cursor
+            std::cerr << "\x1b[?25l";
+
             while (!robinsonizer.found()) { // show progress info
                 prev_iter = cur_iter;
                 std::this_thread::sleep_for(std::chrono::seconds{1});
                 cur_iter = robinsonizer.total_iterations();
                 std::cerr << '\r' << cur_iter - prev_iter << " iterations per second, " << cur_iter << " total";
             }
+            // show cursor
+            std::cerr << "\x1b[?25h";
             worker.join();
             std::cout << '\n';
         } else {