Maintainer: ‘Christian Brownlees <christian.brownlees@upf.edu>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: person(given = "Christian",
                    family = "Brownlees",
                    role = c("aut", "cre"),
                    email = "christian.brownlees@upf.edu")
as necessary.
'library' or 'require' call not declared from: ‘MASS’
Maintainer: ‘Christian Brownlees <christian.brownlees@upf.edu>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: person(given = "Christian",
                    family = "Brownlees",
                    role = c("aut", "cre"),
                    email = "christian.brownlees@upf.edu")
as necessary.
'library' or 'require' call not declared from: ‘MASS’
'library' or 'require' call not declared from: ‘MASS’
'library' or 'require' call not declared from: ‘MASS’