All in all doesn't look too bad :)

• Polls

  • bot methods: sendPoll, stopPoll
  • object: Poll
  • msg attribute: poll

• ChatMember attribute: is_member

• msg attribute: forward_sender_name

irelevant changes

• deleteMessage can be used in private chats
• pinned msg in basic groups
• new webhook subnets
• document thumbnail changes (might need changing of tests)