some REPLs may want to further configure compilation, -setup is the last chance they get to do this. add :merge-opts support for the return value of -setup, these will get merged into the original opts.
some REPLs may want to further configure compilation, -setup is the last chance they
get to do this. add :merge-opts support for the return value of -setup, these will get
merged into the original opts.

mstang/clojurescript,mstang/clojurescript,mstang/clojurescript