Checking in changes prior to tagging of version 0.17.

Changelog diff is:

diff --git a/Changes b/Changes
index ddf1865..de6a341 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,10 @@ Revision history for Perl extension App-PRT

 {{$NEXT}}

+0.17 2014-09-02T01:01:32Z
+    - Rename rename_name_space to rename_namespace (thanks miyagawa)
+    - Delete help command for DRY. You can use perldoc prt instead.
+
 0.16 2014-08-31T10:35:30Z
     - Fix typo, add documentation (thanks syohex)