v.5.9.0

Improvements:

1. [LUNA-5353] The new resource was added, see get config.

2. [LUNA-5339] The use of dynamic handler is supported for estimator task, see estimator task

3. [LUNA-5368] The new resource was added, see validate handler policies.

Bugs fixed:

1. [LUNA-5387] OpenAPI documentation was fixed, see page_size query parameter at get events.

Migration:

See a migration manual.