XML Schema for ResoureSync extensions to Sitemap files.
Simeon Warner
Created: 2013-01-06
Metadata about a resource
Links to other related resources
Allowed values of the change attribute are
created, updated, deleted
Path values must start with a slash, must not end with a slash
MIME Content Types are described in RFCs 2045,2046
http://tools.ietf.org/html/rfc2045
http://tools.ietf.org/html/rfc2046
The priority attribute may have values 1 through 999999