Licence
~~~~~~~

``FastChem`` is released under the GNU Public Licence (GPL) 3.0. That
means, it can be freely copied, edited, and re-distributed. If the code
is re-distributed it has to be released under at least a GPL 3.0 licence
as well. The full licence of ``FastChem`` can be found in the repository
(``LICENSE`` file) or under https://www.gnu.org/licenses/gpl-3.0.html.

This user guide is released under the Creative Commons Licence (CC BY
SA). Licensees may copy and distribute the work and make derivative
works based on it only if they give the authors the credits by providing
a reference to the original guide and the corresponding GitHub
repository. Licensees may also distribute derivative works only under a
license identical to ("not more restrictive than") the license that
governs the original work.

The ``FastChem`` repository also links to an additional open source
code, the ``PyBind11`` library (https://github.com/pybind/pybind11) that
converts C++ code into a module callable from Python. This library
is licensed under the BSD licence, see
https://github.com/pybind/pybind11/blob/master/LICENSE for details.  

Additionally, the ``FastChem`` repository includes the C++ linear algebra library
``Eigen`` in a separate folder. The original ``Eigen`` code can be found at 
https://eigen.tuxfamily.org and has been released under the Mozilla Public License 2.0, 
see https://www.mozilla.org/en-US/MPL/2.0/ .