drake no longer stores the config object,
the plan, etc. in the cache during make(). This change
improves speed.
read_drake_graph(path = getwd(), search = TRUE, cache = NULL, verbose = 1L)Path to a drake cache
(usually a hidden .drake/ folder) or NULL.
Deprecated.
drake cache. See new_cache().
If supplied, path is ignored.
Deprecated on 2019-09-11.
2019-01-06