added already created issues to todos

Author: Hirogen

src/LogExpert.Core/Classes/Filter/Filter.cs

@@ -22,7 +22,7 @@ internal class Filter
 
         #region cTor
 
-        //TODO Is the callback needed?
+        //TODO Is the callback needed? (https://github.com/LogExperts/LogExpert/issues/401)
         public Filter (ColumnizerCallback callback)
         {
             _callback = callback;