Add TODO notes.

Author: joniles

TODO.md

@@ -0,0 +1,10 @@
+# TODO
+Can't currently identify how MPP14 files are storing the "recurring" flag.
+This flag is set to true on the recurring task itself, and also on the child tasks
+which represent the expansion of the recurrence.
+
+It is possible to add non-recurring tasks as children of the parent recurring task
+and hence you can see a mixture of true and false values for the flag underneath the
+parent recurring task.
+
+For other MPP file types the recurring flag is easily identifiable.