logging.diff

diff --git a/lib/transformer.dart b/lib/transformer.dart
index 5c68cbb..16ba198 100644
--- a/lib/transformer.dart
+++ b/lib/transformer.dart
@@ -146,11 +146,14 @@ class _SerialTransformer extends Transformer {
           .then((l) => l.any((result) => result));
 
   Future apply(Transform transform) {
+    transform.logger.info("start");
     return Future.forEach(_transformers, (t) {
+      transform.logger.info("running $t.isPrimary");
       return new Future.value(t.isPrimary(transform.primaryInput))
         .then((isPrimary) {
+          transform.logger.info("$t.isPrimary: $isPrimary");
           if (isPrimary) return t.apply(transform);
-        });
-    });
+        }).then((_) => transform.logger.info("$t finished applying"));
+    }).then((_) => transform.logger.info("finish"));
   }
 }