Version 4.2 - New Delegates, Bug Fixes, Share Links

- Create file share links using the `loadShareLinkForFile` method.
 - New delegate methods help create and process share links.
 - Updated delegate names and properties. Now delegates have more
conventional names and provide more information. Make sure you
re-implement the updated delegate methods. The old ones have been
marked as depreciated.
 - Fixed a major bug where subdirectories were not loaded properly.