Combine multiple file reads and/or API fetches into a single
deduplicated sm_corpus.
Examples
c1 <- sm_example_corpus(n_works = 50, seed = 1)
c2 <- sm_example_corpus(n_works = 50, seed = 2)
combined <- sm_build_corpus(c1, c2, dedupe = TRUE)
#> ✔ Removed 50 duplicate works by DOI.