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.