- Added a new feature to Link. Now if the URL is a directory (finishes with

  '/'), index.xbf is automaticly appended.
- Added two new functions to deal with subdirectories and Apaches 'PATH_INFO':
  getWebPath() and getFsPath(). Both returns a string to prepend to a path to
  fix it, one for URL paths and the other for Filesystem paths.
- Added subdirectory support examples.
- Updated UML diagram and version numbers.