Each library has it's own license, choosen by the original developer.
If no license is found, or it isn't excluding, GPLv3 should be applied
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.
GNU General Public License v3.0
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/.
Those are libraries for the Ikusi Makusi project.
These libraries have been tested win the Windows version of the Arduino IDE 1.8.5