Copyright (c) 2015-2016, A. Tomlinson. All rights reserved.
pyStim is licensed under the GNU General Public License (version 3). For the complete text of that license see http://www.gnu.org/copyleft/gpl.html
In basic terms, this allows you to use, redistribute, add to, modify, or even sell, pyStim or any of its components. If you do release any such 'derivative works' however, you must make this source code available with the distribution and must also license your product under the GNU GPL.