It is developed by Pengfei Li in Prof. Kenne Merz's Research Group
at Michigan State University.

This software is free of charge and a version 1.0 Beta1 has been
released in AmberTools15 package, a version 1.0 has been released
in GitHub, and version 2.0 has been released in AmberTools16.

It should be used with AmberTools15 (or higher version) due to it
uses other code and files inside the AmberTools packge.

Copyright (C) 2015 Pengfei Li

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, either version 3 of the License, or
(at your option) any later version.

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.  If not, see <http://www.gnu.org/licenses/>.

The `setup_env.sh` and `pt.py` code is released under the GNU Lesser
General Public License, version 2.1, Copyright (C) Jason Swails.
See GNU_LGPL_v2 in this directory for details.