Checking in changes prior to tagging of version 0.19.

Changelog diff is:

diff --git a/Changes b/Changes
index 2be5aea..60a7724 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,11 @@ Revision history for Perl extension Monoceros

 {{$NEXT}}

+0.19 2013-06-11T17:18:23Z
+
+  - use file stat instead of symlink
+  - back fdopen in worker. error occurred in *bsd
+
 0.18 2013-06-11T06:12:22Z

   - support min-readahead-reqs option