Prompt to save or discard when closing the software (Enhancement)

After having made changes, when closing the software, it will just close, and will not save the changes unless I used the Save Policies option in the File menu, or used the CTRL+S shortcut.

An option when closing the Policy Plus software (after changes were made) asking if the changes should be saved/discarded/similar would be helpful for the odd occasion where someone accidentally exits out without saving. :)