💝 Improvements
- Display contributions (examples & extensions) on the user profile.
- When choosing an username, proper validation is made to ensure it follows the guidelines (alphanumerical characters only, as well as underscore and hyphens).
- Remember to choose a short and memorable username (like you would do on Twitter, GitHub, Discord...). A display name (allowing you to enter a fancier/longer name) will be available in the future.