Update git submodules

* Update ChronoSync from branch 'master'
  to e374e7000cd443d9b973130c63e88005c26c69e3
  - Prepare release 0.5.1
    
    Change-Id: I6355c350822fa5de1f68db6d205ca2ba4044b0dc
    
diff --git a/ChronoSync b/ChronoSync
index e87d8e2..e374e70 160000
--- a/ChronoSync
+++ b/ChronoSync
@@ -1 +1 @@
-Subproject commit e87d8e2c4a6b731e8f9036cac3b77290ce7d4a5b
+Subproject commit e374e7000cd443d9b973130c63e88005c26c69e3