cqm-header-8d40959255466603.yaml

---
features:
  - |
    ``ConstrainedQuadraticModel.to_file()`` now uses serialization format 1.2.
    This format is backwards compatibile.
  - |
    Add ``vartype`` and ``linear_only`` arguments to ``ConstrainedQuadraticModel.num_biases()``.
  - |
    Add ``vartype`` and ``include_objective`` arguments to ``ConstrainedQuadraticModel.num_quadratic_variables()``.
  - |
    Add ``check_header`` keyword-only argument to ``ConstrainedQuadraticModel.from_file()``.
deprecations:
  - |
    In the future, ``ConstrainedQuadraticModel.num_quadratic_variables()``
    will also include the objective towards the count by default.