Disable tracelogger on net46 with mono backend

Workaround for: #20
Disable the trace-logger on the '.Net 4.x' api in combination with the 'mono' scripting backend.
Reason is that the code-stripper (on all settings except 'Disabled') removes part of
'System.Configuration' on which 'System.Diagnostics.TraceListener' depends.
Because upm packages do not support 'link.xml' files at this time there is no easy way to instruct
the stripper not to remove those. Disabling is acceptable in this case as its only used as a log-sink
for 'Debug.Assert' and 'Debug.Fail' and either of those triggering would mean there is a serious bug
in this repository.

src/ComponentTask/Internal/TraceLogger.cs

@@ -1,3 +1,13 @@
+/*  Workaround for: https://github.com/BastianBlokland/componenttask-unity/issues/20
+Disable the trace-logger on the '.Net 4.x' api in combination with the 'mono' scripting backend.
+Reason is that the code-stripper (on all settings except 'Disabled') removes part of
+'System.Configuration' on which 'System.Diagnostics.TraceListener' depends.
+Because upm packages do not support 'link.xml' files at this time there is no easy way to instruct
+the stripper not to remove those. Disabling is acceptable in this case as its only used as a log-sink
+for 'Debug.Assert' and 'Debug.Fail' and either of those triggering would mean there is a serious bug
+in this repository. */
+#if !(ENABLE_MONO && NET_4_6)
+
 using System.Diagnostics;
 
 namespace ComponentTask.Internal
@@ -43,3 +53,5 @@ runs AFTER scene load and not before should give projects the chance to use thei
         }
     }
 }
+
+#endif // !(ENABLE_MONO && NET_4_6)