fix: use clojure println log

Evidently the `.println` method doesn't work with some version of Clojure.

Switches to rebinding *out* to *err* and logging via `println`.

Closes #4

.gitignore

@@ -1,3 +1,4 @@
 .cpcache
 /pom.xml
 /target/
+/.nrepl-port

src/teknql/tailwind.clj

@@ -36,7 +36,8 @@
   "Log the provided `strs` to stderr with a prefix determined by the build ID
   of the passed in `build-cfg`."
   [build-cfg & strs]
-  (.println *err* (apply str "[" (:build-id build-cfg) "] " strs)))
+  (binding [*out* *err*]
+    (println (apply str "[" (:build-id build-cfg) "] " strs))))
 
 (defn- cfg-get
   "Behaves identical to `get` but logs the default value back to the user."