adapted to new logging macros

tester/main.cpp

@@ -60,7 +60,8 @@ int main(int argc, const char * argv[]) {
         }
         std::cout << "hello, tester\n";
 		sc::logger logger(sc::loglevel::debug);
-		logger.msg(sc::loglevel::info, 42, " = ", 6, " x ", 7);
+		_info(logger, 42, " = ", 6, " x ", 7);
+		_debug(logger, "efkes proberen");
     } catch (const std::exception& ex) {
         std::cerr << "tester: " << ex.what() << '\n';
         return EXIT_FAILURE;