Revenue: Get all reservation changes
When getting historic reservation data, such as reservations/getAll it would be great if we could get all states of reservation.
For instance, reservation was created on 10th of July for 10th of August for 30 rooms. It was changed from 30 to 50 rooms on 15 of July. Currently we can only access last state, however getting older state (state of 30 rooms in this example), would be great. This would allow us to recreate historic booking correctly. We can use this booking for creating different machine learning algorithms.