Checking in changes prior to tagging of version 0.04.

Changelog diff is:

diff --git a/Changes b/Changes
index 89439d7..406be15 100755
--- a/Changes
+++ b/Changes
@@ -2,15 +2,20 @@ Revision history for Perl extension Class-Enum

 {{$NEXT}}

+0.04 2013-09-16T13:25:48Z
+
+    - Use `%Carp::Internal` instead of `$Carp::CarpLevel`.
+    - Add `-install_exporter` option.(djerius++)
+
 0.03 2013-08-06T22:50:35Z

-    * Add `from_ordinal` class method.(Kulag++)
+    - Add `from_ordinal` class method.(Kulag++)

 0.02 2013-07-10T10:26:54Z

-    * Modify POD, add `is_*` method.
-    * Bug fix, failed overloading string("") and numeric(0+) conversion under perl 5.16.3 or older.
+    - Modify POD, add `is_*` method.
+    - Bug fix, failed overloading string("") and numeric(0+) conversion under perl 5.16.3 or older.

 0.01 2013-07-07T17:36:05Z

-    * Initial release.
+    - Initial release.