Rebind `*print-namespace-maps*`

[vemv]

IME, many people dislike the *print-namespace-maps* default behavior, i.e. print namespaced maps at the repl.

It seems to me that cider-nrepl could change this default?

Right now, we observe options such as:

  nrepl.middleware.print/options     (dict
                                       right-margin 70)

If we change the default, these options look like a nice place to let users opt out.

[bbatsov]

Can you elaborate on what's the issue here? Isn't CIDER using the same default as Clojure?

[vemv]

Yes, it's the same default (true) that people dislike.

Maybe we can simply add that option here. Then, CIDER side, one could customize cider-print-options (and we could look into changing the default later).

[bbatsov]

Making this configurable sounds reasonable.