Fixed auto value string enum conversion

Examples/Program.cs

@@ -32,7 +32,7 @@ class Program {
         Task.Factory.StartNew(async () => {
 
             //attaching the logger
-            Logger.LogLevel = LogLevel.Critical;
+            Logger.LogLevel = LogLevel.Verbose;
             Logger.OnNewLogMessage((date, msg) => {
                 Console.WriteLine($"{date.ToString("HH:mm:ss")} {msg}");
             });

Examples/TestRegisters.cs

@@ -68,6 +68,8 @@ namespace Examples {
         [Register(50)]
         public CurrentState TestEnum { get; private set; }
 
+        [Register(100)]
+        public TimeSpan TsTest2 { get; private set; }
 
     }
 }