Generate a Drake Plan for dataset references

Given N datasets, extract the citation from each one, and then combine them into a single vector and remove duplicates.

build_references_plan(datasets, ...)

Arguments

datasets	a drake plan listing the datasets to be analyzed
...	arguments to be passed to drake::drake_plan

Value

a drake plan (i.e. a tibble) specifying the targets and commands for all the references and the combined vector