**Acknowledgements**

F. Rey-García acknowledges the Portuguese Science and Technology Foundation (FCT) for the SFRH/BPD/108581/2015 grant and is grateful to funding from EU (project SPRINT, EU H2020-FET-OPEN/0426). C. Bao-Varela acknowledges funds from Xunta de Galicia (ED431E 2018/08) and Consellería de Cultura, Educación e Ordenación Universitaria (ED431B 2017/64). F.M. Costa acknowledges financial support from FEDER funds through the COMPETE 2020 Programme and National Funds through FCT—Portuguese Foundation for Science and Technology under the projects UID/CTM/50025/2019 and POCI-01-0145-FEDER-028755.
