Maintainer: ‘Svetlana Saarela <admin@svetlanasaarela.com>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: c(person(given = "Svetlana",
                      family = "Saarela",
                      role = c("aut", "cre"),
                      email = "admin@svetlanasaarela.com"),
               person(given = "Anton",
                      family = "Grafström",
                      role = "aut"))
as necessary.

Found the following URLs which should use \doi (with the DOI name only):
  File ‘datassim.Rd’:
    https://doi.org/10.20944/preprints201710.0098.v1
Maintainer: ‘Svetlana Saarela <admin@svetlanasaarela.com>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: c(person(given = "Svetlana",
                      family = "Saarela",
                      role = c("aut", "cre"),
                      email = "admin@svetlanasaarela.com"),
               person(given = "Anton",
                      family = "Grafström",
                      role = "aut"))
as necessary.

Found the following URLs which should use \doi (with the DOI name only):
  File ‘datassim.Rd’:
    https://doi.org/10.20944/preprints201710.0098.v1
'LazyData' is specified without a 'data' directory
'LazyData' is specified without a 'data' directory
'LazyData' is specified without a 'data' directory