This is good. The last time I downloaded an implementation it was broken. I went to mess with the copy I already have after reading this and I keep breaking the REPL.
https://github.com/michaelsbradleyjr/shen.clj/releases/lates...
At this point, it's just a tidied up release of the original author's work, which stopped at Shen 8 (version 16 is the most recent). I should also note that it doesn't seem to deal with tail calls properly in some situations, so you could run into a stack overflow here and there.
Once Shen 17 is released and I've finished reading The Book of Shen, I plan to bring the Clojure port up to date.