more fixes to pass r cmd check

DESCRIPTION

@@ -21,7 +21,6 @@ License: MIT + file LICENSE
 Depends:
     R (>= 3.5.0)
 Imports: 
-    assertthat,
     curl,
     DBI,
     duckdb,

R/download_data.R

@@ -1,4 +1,4 @@
-#' Download the data files of specified type, zones, dates and data version
+#' Download the data files of specified type, zones, and dates
 #' 
 #' This function downloads the data files of the specified type, zones, dates and data version.
 #' @param type The type of data to download. Can be `"origin-destination"` (or ust `"od"`), or `"trips_per_person"` (or just `"tpp"`) for v1 data. For v2 data `"overnight_stays"` (or just `"os"`) is also available. More data types to be supported in the future. See respective codebooks for more information. **ADD CODEBOOKS! to the package**

R/get.R

@@ -30,6 +30,7 @@ spod_get_latest_v2_xml = function(
 #' This function retrieves the data dictionary for the specified data directory.
 #'
 #' @param data_dir The directory where the data is stored. Defaults to the value returned by `spod_get_data_dir()`.
+#' @param quiet Whether to suppress messages. Defaults to `FALSE`.
 #' @return The data dictionary.
 #' @export
 #' @examples

R/get_v1_data.R

@@ -212,7 +212,7 @@ spod_clean_zones_v1 <- function(zones_path) {
 #' Retrieve the origin-destination v1 data (2020-2021)
 #' 
 #' This function retrieves the v1 (2020-2021) origin-destination data from the specified data directory.
-#' 
+#' @param read_fun The function to read the data. Defaults to `duckdb::tbl_file`.
 #' @inheritParams spod_download_data
 #' @return A tibble with the origin-destination data.
 spod_get_od <- function(