Update git submodules

* Update ChronoSync from branch 'master'
  - Prepare release 0.4.0
    
    Change-Id: Iec6b0ccd266f34605b0b3ad4ae95250049745953
    
diff --git a/ChronoSync b/ChronoSync
index f93a145..9e50021 160000
--- a/ChronoSync
+++ b/ChronoSync
@@ -1 +1 @@
-Subproject commit f93a14591de4e196a99c3be5064bb2740d03e79e
+Subproject commit 9e50021c10893420f94f77276efdc5da8ca8d4b9