Hi,

Here is my proposal to create a new :async feature for 
Org-babel-clojure. This is discussed at length in this blog post:

http://fgiasson.com/blog/index.php/2016/04/05/using-clojure-in-org-mode-and-implementing-asynchronous-processing/

I added the commit of the changes, the commit for the ORG-NEWS file and 
the commit for the Worg documentation.

IMPORTANT NOTE: this includes the patches for the new :async feature 
*AND* the new org-babel-clojure-sync-nrepl-timeout setting (for 
consistency's sake)

Thanks,

Fred