New Features
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* New parallel constructor for c++ AdjMapBQM
* `DQM.to_file` now returns a seekable file-like
* `DQM.from_numpy_vectors` now reserves the quadratic vectors which should reduce memory and speed up construction
Fixes
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* `DQM.from_file` now correctly accepts bytes-like objects
Changes
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* `DQM.to_file`'s `compressed` kwarg has been deprecated in favor of `compress`