This release brings major improvements on many different aspects: While version 0.7.0 introduced some initial new APIs for bindings, these are now further evolved by having them being used in practice by many users with their feedback being incorporated.
A major further new API is the new rule engine. This is still considered to be in an early stage and rather experimental, so users should expect these APIs to change in upcoming releases.
The REST API now gives access to all aspects of the system, comes with automatic Swagger documentation and it is used by the new Paper UI (an angular js app) as a reference user interface.