show warning when invalid $url
Checking in changes prior to tagging of version 0.05.

Changelog diff is:

diff --git a/Changes b/Changes
index 5e53e5f..91f81cf 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,9 @@ Revision history for Perl extension WWW-DojinEvent

 {{$NEXT}}

+0.05 2013-06-01T07:36:05Z
+    - show warning when invalid $url
+
 0.04 2013-06-01T04:46:35Z

     - add fields method: scraped field name list