doc: more docs and TODO

TODO.md

@@ -281,6 +281,7 @@
 - [ ] Make `Cmd` to be used internally as it needs reference to the `Program<APP>`
     - [ ] Use `Task` for returning from `Application` init and `update`.
     - The `Recurring Task` is actually just a Sub in elm
+        - Issue with recurring task, how to store the closures which has different multiple types for the in arguments
     - The `SingleTask` is a Cmd in sauron
     - Sauron just consilidate them into one enum struct for simplicity
 

crates/core/src/dom/program.rs

@@ -705,6 +705,7 @@ where
             );
         }
 
+        // execute this `cmd` batched pending_cmds that may have resulted from updating the app
         cmd.emit(self.clone());
     }