xml_dom.py: Fixed bug in parent() where it didn't account for NodeParentIter's first element returned being the current node, not its parent. Refactored parent() to use parentNode directly, and NodeParentIter to use parent(), instead of the other way around.
xml_dom.py: Fixed bug in parent() where it didn't account for NodeParentIter's first element returned being the current node, not its parent. Refactored parent() to use parentNode directly, and NodeParentIter to use parent(), instead of the other way around.