create_vignette_last_modif
                        Creates and updates a vignette in the
                        'vignette/' directory of a package with last
                        modification time of tracked files
each_pattern            Create the text to add in a markdown file to
                        present each pattern as a chapter of the book
fake_repo               Create a fake git repository in a specific
                        folder
get_commits_pattern     Get commits associated with a text pattern
get_commits_tags        Get commits associated chronologically with
                        tags
get_info                Get the first and last modification time for a
                        specific file, based on git2r::blame().
get_last_modif          Get the first and last modification time of
                        files of a directory
git_down                Turns the active branch history of git into a
                        bookdown.
nest_commits_by_pattern
                        Nest all commits by each pattern found in the
                        commit messages
present_files           Presenting results of files and last
                        modification time in a printed table using
                        'kable()'
