The FDButils package holds a grab-bag of utility functions used by FDB. It includes few dependencies beyond the R 'base' and 'recommended' packages, but do see DESCRIPTION file for a handful of others. In general, FDButils and its dependencies should be pretty stable.
Install with remotes::install_github():
install.packages("remotes") ## If you don't already have it.
remotes::install_github("davebraze/FDButils")