Changes in version 1.0.2 (2024-07-13)                  

  - 2024-07-15

  - Remove duplicated data in hogwarts.

  - Add argument rm_empty_df in pivot().

  - Use pkgdown.

                 Changes in version 1.0.1 (2023-07-16)                  

  - 2023-07-15

  - Add data: hogwarts which includes timetable in Hogwarts School of
    Witchcraft and Wizardry.

  - Fix bug in split_force().

                 Changes in version 1.0.0 (2023-06-15)                  

  - 2023-06-15

  - First release
    
      - Add pivot() and related functions: add_group_sub(),
        validate_col() and split_force()
      - Add util functions: omit_na_row(), has_col(), omit_na_col(),
        extract_col(), and na2empty()