new version and docs

models/intermediate/core/schema.yml

@@ -821,12 +821,30 @@ models:
         description: Timestamp of when the accommodation record was extracted from the backend into the DWH.
 
   - name: int_core__check_in_cover_users
+    latest_version: 1
+
     description:
       This model contains information about hosts that offer check in cover.
       It has basic information on the users like name, phone, email or joined date.
 
       This model is restricted to active user so it doesn't include historical data
       like users that had check-in cover but are currently inactive.
+
+      The new candidate version for this model, v2, changes the strategy to 
+      define which hosts we consider to offer check in cover. v1 used to look at
+      the verification set configurations and added hosts which had the cover in
+      it. v2 instead simply assumes that hosts that have had Guest Journeys 
+      which offer the cover in the last 30 natural days are relevant. This is 
+      simpler, but considered good enough. This decision was made as part of the
+      migration to the Guest Products data model, which would have made sticking
+      to the old way extremely complex and error prone.
+    
+    versions:
+      - v: 1
+      - v: 2
+        columns:
+          - include: all
+
     columns:
       - name: id_user_host
         data_type: character varying