Address CRAN comments

[statnmap]

Validation criteria

• No Missing Rd-tags for pipe.Rd: \value

#73 PR has been merged into main

• check_as_cran should not write in the user's home filespace

#74

• \dontrun{} are replaced by \donttest{}

• There is no remaining "data/iris.rda" at the root of the dev package (added during unit tests)
  
  

Context

• If there are references describing the methods in your package, please
  add these in the description field of your DESCRIPTION file in the form
  authors (year) doi:...
  authors (year) arXiv:...
  authors (year, ISBN:...)
  or if those are not available: https:...
  with no space after 'doi:', 'arXiv:', 'https:' and angle brackets for
  auto-linking. (If you want to add a title as well please put it in
  quotes: "Title")

• Please add \value to .Rd files regarding exported methods and explain
  the functions results in the documentation. Please write about the
  structure of the output (class) and also what the output means. (If a
  function does not return a value, please document that too, e.g.
  \value{No return value, called for side effects} or similar)
  Missing Rd-tags:
  pipe.Rd: \value

• \dontrun{} should only be used if the example really cannot be executed
  (e.g. because of missing additional software, missing API keys, ...) by
  the user. That's why wrapping examples in \dontrun{} adds the comment
  ("# Not run:") as a warning for the user. Does not seem necessary.
  Please replace \dontrun with \donttest.

Please unwrap the examples if they are executable in < 5 sec, or replace
dontrun{} with \donttest{}.

• Please ensure that your functions do not write by default or in your
  examples/vignettes/tests in the user's home filespace (including the
  package directory and getwd()). This is not allowed by CRAN policies.
  Please omit any default path in writing functions. In your
  examples/vignettes/tests you can write to tempdir(). -> R/check_as_cran.R