Here you'll store any files that provide useful functionality for your work, but do not constitute a statistical analysis per se. Specifically, you should use the lib/helpers.R script to organize any functions you use in your project that aren't quite general enough to belong in a package.

If you have project specific configuration that you'd like to store in the config object, you can specify that in lib/globals.R. This is the first file loaded from lib, so any functions in lib, munge or src can reference this configuration by simply using the config$my_config_var form.