Cancellation Waitlist

Please merge with already created feature request... https://www.ownerrez.com/forums/requests/wait-list-functionality

It would be really great if we had a way to put a contact on a waitlist for a week that might open up in our peak season. We get lots of people wanting me to reach out if particular weeks open up. And there are always multiple weeks that do open up, but I have no way of recalling who wanted which week.