added new type pybind11::bytes, cleanup of various macros (fixes #49)
diff --git a/example/example4.ref b/example/example4.ref
index 1d2dd9b..9be2bdc 100644
--- a/example/example4.ref
+++ b/example/example4.ref
@@ -14,3 +14,7 @@
 EMode.EFirstMode
 EMode.EFirstMode
 Example4::test_function(enum=1)
+bytes[0]=1
+bytes[1]=0
+bytes[2]=2
+bytes[3]=0