You mention the enhanced version of read-line that takes a reader argument in the README, but it seems like it is only available in the clojure.tools.reader.reader-types namespace. Is that intentional? Perhaps making it available in the clojure.tools.reader and/or clojure.tools.reader.edn namespace might be more convenient for the user of the library? I understand that the current implementation of read-line is Java-specific, so maybe this is the only reasonable way to expose it.
In any case, documenting the namespace in which this enhanced read-line is available in the README would be good.