Left overs from #161 - https://github.com/NNPDF/pineko/pull/161#discussion_r1528568483 - https://github.com/NNPDF/pineko/pull/161#discussion_r1528586144 - https://github.com/NNPDF/pineko/pull/161#discussion_r1528596185 - https://github.com/NNPDF/pineko/pull/161#discussion_r1528606957 - https://github.com/NNPDF/pineko/pull/161#discussion_r1530207162
