1.29.0

New Features

• Add close() to all QPU and hybrid samplers. See #77, #554.

• Add support for context manager protocol to all samplers. See #91, #556.

  The recommended way to use DWaveSampler is now from a runtime context:

  with DWaveSampler() as sampler:
      sampler.sample_ising(...)

  Alternatively, call the close() method to terminate the sampler resources:

  sampler = DWaveSampler()
  ...
  sampler.close()