Preprocessing of PEP725 data, merges separate files into tidy data, with each observation a line, each column a different parameter value.
pr_merge_pep725(path = tempdir())
concatted data of all data in the path as a tidy data frame including all normal parameters, and the species name and country code as derived from the file name
if (FALSE) { # \dontrun{
tidy_pep_data <- pr_merge_pep725()
} # }