Enabling the HTML minifying uses Tidy's default doctype. It'd like to change this to the HTML5 doctype. I can add this as an option manually to Minify_HTMLTidy::minify
like this:
'doctype' => 'html5'
But I'd prefer not to change the plugin source. Could either:
- html5 be the default for everyone
- there be a doctype option in W3TC's HTML minifier settings
- there be WordPress filter for the minifier options
Thanks.