[+] Add some docstrings
[+] Back: update find_unmatched_blocks()
[-] Back + Front: validate new user parameters (email validation, name length, password length)
[-] Back: slow requests, 250 - 500 ms (but 10-15 ms through Swagger UI)
[-] Back: FastAPI doesn't recommend peewee. Migrate from peewee to SQLAlchemy
[-] Front: clear pass fields after signup
[-] General: add Telegram channel
[-] General: add Telegram group
[-] Front: migrate from JS to TS
[-] Back: migrate from MySQL to PostgreSQL
[-] General: create tool (WPF?) for adding questions to DB
[-] Front: migrate to Vue.js