Tweety, being a Twitter clone, is supposed to act like a social media application that allows multiple users to communicate and interact with each other. (This application, however, is being made purely to demonstrate the features of Angular, Spring Boot 2, and their ability to integrate together. This application is in no way a competitor or replacement for Twitter and doesn't include all the features of such a social media application.) The Tweety application must be publicly accessible via the internet, and registered users must be able to send out tweets and mention another user in a tweet. 

The main feed must be visible without any authentication and the user feed must only be visible after authentication.