Version 1.3.9 released

Add a method to get the URI bound to a prefix for an XMLNode
Add methods to get the bounded prefix and URIs for an XMLNode for a node and its parents in the tree
Fix some cases where some prefix were not bound correctly for an XMLNode
Add a method to get the QName of an attribute which is a QName reference for an XMLNode
Fix the JFileSelector not accepting correctly list of file paths typed by the user in the text field
Fix the JMultipleFileSelector not accepting correctly list of file paths typed by the user in the text field
The getSelectedFiles() method of the JFileSelector now return an array with just one file if configured for a single selection
Note: there is ongoing work to add a Schema parser and Schema validation