Website Updates Tracking

Is there a way to track website updates? I presently use  the singlefile browser plugin to save/backup a page as an autonomous html file. I date the file, then make updates, and create a new file for that page. It's klunky. It would be nice to use something more sophisticated, especially for multiple pages.

support.toastmastersclubs.org/doc/item/backup-your-site

I'm really looking for a way to log specific changes, EG, on the homepage, if I added a name, that change would be logged. It would be useful to share the item change status  with my president, as he's working closely with me.

Sorry we don't track changes, that is up to the club.