Write logs to stdout

closes #85

---

Pull Request resolved: #89
commit_hash:34d88dd785f0167fee940ad7e1309b8866f4d1f4

cmd/trcli/main.go

@@ -139,7 +139,7 @@ func main() {
 
 func newLoggerConfig() zp.Config {
 	cfg := logger.DefaultLoggerConfig(zapcore.DebugLevel)
-	cfg.OutputPaths = []string{"stderr"}
+	cfg.OutputPaths = []string{"stdout"}
 	cfg.ErrorOutputPaths = []string{"stderr"}
 	return cfg
 }