- Added option to return FileReference instead of filepath in nnt3::File()-process(). This method is great for creating cached and processed thumbnails on-the-fly, e.g. when sending a REST-response which needs processed images. 
- Added helper for checking if a hashed password in the database needs update because it uses outdated hashing-algorithmn in nnt3::Encrypt()-hashNeedsUpdate()
- Added example how to convert old hashes in fe_user-table to new hashes. 
- Added  helper for logging of frontend-user, even if frontend is not available, e.g. in a MiddleWare process.
- Many improvements and updates on the documentation, in DE and EN