Update changelog for 0.5.4

Change-Id: I62d9423803ad7414e04851554e53c2403f7e665e
diff --git a/changelog.txt b/changelog.txt
index de04499..fb41d04 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,3 +1,7 @@
+0.5.4
+
+- Fixed incremental compilation issue with declare-styleable
+
 0.5.3
 
 - Fix a crashing bug in PrepareDependenciesTask