Version 1.3.12 released

Use docGenerator 1.6.8.1.1
Add methods to directly create a child Node in a Node with its name or qualified name
Allow to set the extension in the ExtensionFileFilter with a dot at the beginning of the extension
Add a method in the ExtensionFileFilter to return the Set of extensions
Add a constructor in the ExtensionFileFilter to create a filter with only one extension without needing to create an array of Strings
Add a static constructor for the ExtensionFileFilter to use a vararg for the extensions
Add a method in the JFileSelector and JMultipleFileSelector to force the selected file to be of the selected choosable file filter
Add methods in the FileUtilities class to get compatible files with multiple extensions