RAA - loosesox

This provides you a set of a simple XML parser and document objects
for XML to reduce casually. To use powerfull Ruby built-in features,
all of the document objects are defined as the sub class of Array
or String adding useful attributes: nodeName, nodeType, testing
the kind of node, and accepting a Visitor instance. The parser may
work as an iterator yielding documents objects in order of parsing,
such as SAX interface. And also, it may build a document tree to
treat later, such as DOM interface. The parser can also eat a
HTML4.01 strict manuscript with the present endtags.