---
upgrade:
- |
:meth:`.PrimitiveJob.submit` no longer blocks on execution finishing.
As a result, :meth:`.Sampler.run`, :meth:`.BackendSampler.run`, :meth:`.Estimator.run`
and :meth:`.BaseEstimator.run` do not block until :meth:`.PrimitiveJob.result` method is called.