Items statistics per event type and level. Each item in the specified version has 4 possible event types:

• new for new items in the code version
• repeated for an item that already existed in preivous versions
• reactivated an item that was resolved but was reactivated in the code version
• resolved an item resolved in one specific version

For each of them we collect the number of items for each possible level: debug, info, warning, error or critical.

Commits for this version compared to the previous project deploy. If deploy tracking feature is not used this value
will be an empty array. https://docs.rollbar.com/docs/deploy-tracking