parse microformats in HTML

 The HTML::Microformats module is a wrapper
 for parser and handler modules of various individual microformats
 (each of those modules has a name
 like HTML::Microformats::Format::Foo).
 .
 The general pattern of usage
 is to create an HTML::Microformats object
 (which corresponds to an HTML document)
 using the "new_document" method;
 then ask for the data,
 as a Perl hashref, a JSON string, or an RDF::Trine model.