nfd, chronosync: Update

Change-Id: I651f96ef1d106d97666d0408dd12e113eba206e2
diff --git a/libchronosync/Makefile b/libchronosync/Makefile
index d71d783..650f918 100644
--- a/libchronosync/Makefile
+++ b/libchronosync/Makefile
@@ -2,13 +2,13 @@
 GIT_URL=https://github.com/named-data/ChronoSync.git
 
 # Tag name or commit hash for checkout
-GIT_VERSION=22eeb2914f66feaa6d8e1c6391dd126bcc37b2ce
+GIT_VERSION=0.5.5
 
 # Package name
 NAME=libchronosync
 
 # Package version
-VERSION=0.5.4-3-g22eeb29
+VERSION=0.5.5
 
 # PPA version
 PPA_VERSION=1