BitBIRCH-Lean Python Package: An open-source clustering module based on iSIM.

If you find this software useful please cite the following articles:
- BitBIRCH: efficient clustering of large molecular libraries:
    https://doi.org/10.1039/D5DD00030K
- BitBIRCH Clustering Refinement Strategies:
    https://doi.org/10.1021/acs.jcim.5c00627
- BitBIRCH-Lean:
    (preprint) https://www.biorxiv.org/content/10.1101/2025.10.22.684015v1

Copyright (C) 2025  The Miranda-Quintana Lab and other BitBirch developers, comprised
exclusively by:
- Ramon Alain Miranda Quintana <ramirandaq@gmail.com>, <quintana@chem.ufl.edu>
- Krisztina Zsigmond <kzsigmond@ufl.edu>
- Ignacio Pickering <ipickering@chem.ufl.edu>
- Kenneth Lopez Perez <klopezperez@chem.ufl.edu>
- Miroslav Lzicar <miroslav.lzicar@deepmedchem.com>

Authors of ./bblean/multiround.py are:
- Ramon Alain Miranda Quintana <ramirandaq@gmail.com>, <quintana@chem.ufl.edu>
- Ignacio Pickering <ipickering@chem.ufl.edu>

This program is free software: you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software Foundation,
version 3 (SPDX-License-Identifier: GPL-3.0-only).

Portions of the file ./bblean/bitbirch.py are licensed under the BSD 3-Clause License
Copyright (c) 2007-2024 The scikit-learn developers. All rights reserved.
(SPDX-License-Identifier: BSD-3-Clause). Copies or reproductions of code in the
./bblean/bitbirch.py file must in addition adhere to the BSD-3-Clause license terms. A
copy of the BSD-3-Clause license can be located at the root of this repository, under
./LICENSES/BSD-3-Clause.txt.

Portions of the file ./bblean/bitbirch.py were previously licensed under the LGPL 3.0
license (SPDX-License-Identifier: LGPL-3.0-only), they are relicensed in this program
as GPL-3.0, with permission of all original copyright holders:
- Ramon Alain Miranda Quintana <ramirandaq@gmail.com>, <quintana@chem.ufl.edu>
- Vicky (Vic) Jung <jungvicky@ufl.edu>
- Kenneth Lopez Perez <klopezperez@chem.ufl.edu>
- Kate Huddleston <kdavis2@chem.ufl.edu>

This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.  See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this
program. This copy can be located at the root of this repository, under
./LICENSES/GPL-3.0-only.txt.  If not, see <http://www.gnu.org/licenses/gpl-3.0.html>.
