Changes in version 0.1.1 (2025-04-07) - Documentation adjusted to changes in CRAN. Changes in version 0.1.0 (2021-10-28) - New function na_move added: move NA across columns (to left or right) or across rows (to top or bottom). Changes in version 0.0.2 (2021-09-20) - Documentation improved. - Depends on R 3.2.0. Changes in version 0.0.1 (2021-07-09) - First CRAN version.