Bot API 6.2

[kenifxyz]

Release notes for API 6.2 with new webapp functionality:

-Added the field isClosingConfirmationEnabled and the methods enableClosingConfirmation, disableClosingConfirmation, showPopup, showAlert, showConfirm to the class WebApp.
-Added the field is_premium to the class WebAppUser.
-Added the event popupClosed.

[kidonng]

https://www.npmjs.com/package/@types/telegram-web-app seems to be more up to date.

[dobromyslov]

https://www.npmjs.com/package/@types/telegram-web-app seems to be more up to date.

@kidonng Thanks for the link.

npm install --save-dev @types/telegram-web-app

@prKassad
Your repo was initially a rising star, but now Telegram Web App types are implemented in the mainstream @types repo.
Could you please add this link to the README?