Checking in changes prior to tagging of version 0.19.

Changelog diff is:

diff --git a/Changes b/Changes
index c9eb7fc..3e43b62 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,9 @@ Revision history for Perl extension App-PRT

 {{$NEXT}}

+0.19 2014-09-02T02:20:48Z
+    - Rename rename_name_space to rename_namespace
+
 0.18 2014-09-02T01:37:56Z
     - Index failed. reverted 334bf37b4b265220031a7af647dd18766d904ea5