ggplot2, tibble, tidytext, magrittr, dplyr, stringr, purrr,
tidyr, likert, cowplot
ggplot2, tibble, tidytext, magrittr, dplyr, stringr, purrr,
tidyr, likert, tm, wordcloud2, forcats, cowplot
knitr, rmarkdown, testthat, rvest, kableExtra