logger.h: Use utils::catv()

Who knows, clever people are everywhere

logger.h

@@ -2,6 +2,7 @@
 #define LOGGER_H
 #include <iostream>
 #include <chrono>
+#include "utils.h"
 class Logger
 {
   private:
@@ -24,7 +25,15 @@ class Logger
 			{
 				(*out) << time(0) << " " << prefix;
 			}
+
+			if constexpr (std::is_convertible_v<T, std::string_view>)
+			{
+				(*out) << utils::catv(val);
+			}
+			else
+			{
 				(*out) << val;
+			}
 			headerSent = true;
 			return *this; // or maybe out itself? probably not.
 		}