Documentation is generated using sphinx: https://sphinx-doc.org
The documentation can be build using make and sphinx. To build the documentation ensure that "sphinx" and "make" are installed::
# Install make using the package manager (Ubuntu/Debian)
apt-get install make
# Install sphinx & sphinx read the docs theme from pip
pip3 install sphinx sphinx_rtd_theme
From the docs folder build the documentation ::
# Build html documentation
make html
The built documentation can then be found under _build/html