Transitive dependency function net.cgrand.parsley.fold/cat is replacing clojure.core/cat

[Lambeaux]

When starting the CLI, users get the following warning:

user=> WARNING: cat already refers to: #'clojure.core/cat in namespace: net.cgrand.parsley.fold, being replaced by: #'net.cgrand.parsley.fold/cat

Besides being a nuisance, at worst, this means the Clojure cat function isn't accessible for the time being. There's no hurry to address this since transducers are a fairly advanced concept. From the docstring of the cat function:

"A transducer which concatenates the contents of each input, which must be a
  collection, into the reduction."

[Lambeaux]

Promoting this to type/bug since if left unaddressed will cause symptoms of an actual bug. Not necessarily a high priority, however.