Spine 1.7.5

CoreJvm

This is a patch release of Spine 1.x. It follows up on the production use of Spine libraries and brings a few requested improvements.

The integration with gRPC server has been improved for better results in dealing with heavy-duty subscriptions.
BlackBoxContext API has been extended with a few endpoints to test for the positive outcomes.

Additionally, several improvements of config scripts were brought to this version.

Compare v1.7.0 and v1.7.5.