Checking in changes prior to tagging of version 0.04.

Changelog diff is:

diff --git a/Changes b/Changes
index 116bdb3..478a773 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,7 @@
 Revision history for Perl extension WWW::GoKGS.

+0.04 Jun 7th, 2014
+
    - Add Scraper#get_filter, #add_filter and #run_filter
    - Scraper#scrape throws an exception if warnings are caught