"""External or experimental tools.

This module encapsulates several tools that the Chemical Checker uses
(e.g. :mod:`~chemicalchecker.tool.node2vec`,
:mod:`~chemicalchecker.tool.hotnet`, etc). The idea is to provide an interface
or wrappers for users to access the main functionalities of these tools.
Very specific project or experimental CC spin-offs can start being submodules
here, e.g. the :mod:`~chemicalchecker.tool.targetmate`.
"""
