evert/sitemap-php — pull request #4 by tristanvanbokkem (2014-05-07 19:31:49+00:00)
Title: Return W3C Datetime compatible format

According to http://www.sitemaps.org/protocol.html#xmlTagDefinitions section. The date of last modification of the file should be in W3C Datetime format by default.

ps. sorry for the whitespace removal, my editor does this automatically.