v0.5.0

Introducing the fifth version of Bus Ticket Booking System. We spent more time on this version to fix some issues in the last version and added some more features to the system:

• Created AI chatbot assistant to help customer get information of the trips, book trips with specific date, seat(s) and passenger information, answer common questions about policies, routes, and booking process,...
• Created review system for customers to rate the trip and write a review for the trip.
• Added Facebook OAuth and Phone Number authentications for more log-in options
• Modified the trips and routes sorting.
• Added the profile page that allows ussers to change their account's information and avatar.
• (and some more feature...)
• Added the unit tests and integration tests for all the features and functions (up to this version).