API
===
.. automodule:: +vdx
.. autoclass:: Problem
   :show-inheritance:
   :members:
.. autoclass:: Vector
   :show-inheritance:
   :members:
.. autoclass:: PrimalVector
   :show-inheritance:
   :members:
.. autoclass:: ConstraintVector
   :show-inheritance:
   :members:
.. autoclass:: ParameterVector
   :show-inheritance:
   :members:
.. autoclass:: Variable
   :show-inheritance:
   :members: