Timberline converter stuff

InABox.Poster.Timberline/TimberlineConverters.cs

@@ -24,11 +24,16 @@ namespace InABox.Poster.Timberline
         }
 
         public override string? ConvertToString(object? value, IWriterRow row, MemberMapData memberMapData)
+        {
+            return ConvertString(value, MaxLength);
+        }
+
+        public static string ConvertString(object? value, int maxLength)
         {
             var str = value?.ToString() ?? "";
-            if (str.Length > MaxLength)
+            if (str.Length > maxLength)
             {
-                str = str[..MaxLength];
+                str = str[..maxLength];
             }
             str = str.ReplaceLineEndings(" ");
             return str;