Configurable Progress bars, they may include percentage, elapsed time,
and/or the estimated completion time. They work in terminals, in
'Emacs' 'ESS', 'RStudio', 'Windows' 'Rgui' and the 'macOS' 'R.app'.
The package also provides a 'C++' 'API', that works with or without
'Rcpp'.

Homepage:
https://CRAN.R-project.org/package=progress
