Original author:
    Sainz de Baranda y Goñi, Manuel <manuel@zxe.io>

Collaborators:
    Ortega Sosa, Sofía <agaxia@zxe.io>

Contributors:
    Haubenthal, Stefan
    Rolandi, Giovan Battista
    Slayden, Glenn
    Vučenović, Zoran <zoran_vucenovic@yahoo.com>