Diogo V. Carvalho 1,2,* , Eduardo M. Pereira 1 and Jaime S. Cardoso 2,3 1 Deloitte Portugal, Manuel Bandeira Street, 43, 4150-479 Porto, Portugal 2 Faculty of Engineering, University of Porto, Dr. Roberto Frias Street, 4200-465 Porto, Portugal 3 INESC TEC, Dr. Roberto Frias Street, 4200-465 Porto, Portugal * Correspondence: [email protected] Received: 21 June 2019; Accepted: 24 July 2019; Published: 26 July 2019