hashcode not needed (premature optimization)
Added factory methods to LagartoDomBuilder.
Added raw text field (tbd).
Now passing domBuilder reference in every node.
Added html renderer, used by every node to ouput html.
Tests added.
Changed how findMatchingParentOpenTag works to match Chrome (i.e. browsers) behavior.
Modified the way how tags are closed in case of error
Removed HTML names as not exact and simplify renderer