Timeline

All CRM entity details have a timeline.

Namespace \Bitrix\Crm\Timeline contains code providing event registration and display.

Class	Description	Available from version
Controller	Descendants for Controller - "timeline controllers". Specifically these controllers register various events.
TimelineEntry	Descendants for TimelineEntry provide for operation CRUD for various timeline records (event types).
TimelineEntry\Facade	Service, providing a unified interface for handling descendants of TimelineEntry.
Pusher	Service, specialized on sending push notifications on timeline updates.
HistoryDataModel\Maker	Service, preparing data for frontend used for showing timeline events.