UML diagrams
------------

.. .. TODO::

..     **ILGIN TO FOLLOW-UP**

..     I'm not convinced that this UML diagram is interesting or useful.  All of the class diagrams describe their
..     inputs and outputs. this one feels too much like a skeleton rather than an actually useful diagram.


Package diagram
***************


.. include:: package_uml.rst

Class diagrams
**************

.. include:: calculator_uml.rst
.. include:: data_model_uml.rst
.. include:: exceptions_uml.rst
.. include:: utils_uml.rst