5555444f5b4ef7c0aa596f52f68b3bf2fc5c55aa make
shadow.test.env/register-test return the test var, just in case someone uses (deftest ...) in the REPL
b95386161133620f669e7b57d4c1106d14549f61 allow custom cljs.user, make cljs repl init-ns configurable, :devtools {:repl-init-ns my.app} defaults to cljs.user, fixes #274