Update changelog and prepare for release

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1004402 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/main/doc/changelog.txt b/main/doc/changelog.txt
index 43b1a21..6f11898 100644
--- a/main/doc/changelog.txt
+++ b/main/doc/changelog.txt
@@ -1,3 +1,9 @@
+Changes from 3.0.3 to 3.0.4
+---------------------------
+
+** Improvement
+    * Update to latest framework version 3.0.4
+
 Changes from 3.0.2 to 3.0.3
 ---------------------------