Quaternion
==========

This class represents a general quaternion, i.e. a quaternion that may not
have :math:`\left\lVert \mathbf{Q} \right\rVert = 1`.
It's not used in NEML natively, just as a base class to the unit 
quaternion :ref:`orientation <Orientation>` class.

.. doxygenclass:: neml::Quaternion
   :members:
   :undoc-members: