Bot API 5.1

• Added updates about member status changes in chats: my_chat_member and chat_member
• Support for improved invite links
• Basic info about voice chats
• And more, read the full changelog here:

https://core.telegram.org/bots/api-changelog#march-9-2021

Warning: After one of the upcoming Bot API updates, some user identifiers will become bigger than 2^31 - 1 and it will be no longer possible to store them in a signed 32-bit integer type. User identifiers will have up to 52 significant bits, so a 64-bit integer or double-precision float type would still be safe for storing them. Please make sure that your code can correctly handle such user identifiers.