Accept optional transducer in `to-chan`

Question

Allow clojure.core.async/to-chan accept an optional transducer that gets passed to the newly created channel.
Why? With transducer passed directly in to-chan there is no need to use pipe or onto-chan with an explicitly created a channel that has transducer attached.

This is my first patch for a Clojure project. Please let me know if something was wrong / missing when creating the ticket.

Answer 1

Reference: https://clojure.atlassian.net/browse/ASYNC-151 (reported by alex+import)