Problem description
Events need to be version to handle changes in their life cycle.

Expected action
Add a section on "Event versioning" to the CAMARA-API-Event-Subscription-and-Notification-Guide.md document

Same information is in the wiki here: https://lf-camaraproject.atlassian.net/wiki/spaces/CAM/pages/14557919/API+versioning#Event-versioning