Cthulhu returns!

Finally, software library editing is here!
Although some features like moving and sorting entries are still missing.

Warning: ALWAYS MAKE A BACKUP OF YOUR ACTIVITY LOG SAVEFILE BEFORE USING THIS!!!

Go to "Activity Log management" then "Edit software library".
Once the list loads, you can either press A to edit a entry, X to remove it, or Y to list/delist it.

Pressing A will take you to another menu, where you can view detailed info about a title.
Select a field, press A to edit it and up/down to modify values.

If you encounter any errors or crashes, report here or on gbatemp.