N-body simulation

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. You should have received a copy of the GNU Affero General Public License along with this program. If not, see <http://www.gnu.org/licenses/agpl.html>.