Bump xos libraries to version 4.0.0

Change-Id: Ic9cde0c71aa018f40882953b849d0ae0a7342754
diff --git a/VERSION b/VERSION
index c992723..05639a5 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.1.1-dev
+1.0.0-dev