Viktor

Fixed the typo in the init code where `servo_2_parked_pw` was set from `servo_1_parked_pw` variable. Before the fix both `servo_1_parked_pw` and `servo_2_parked_pw` were initialized from `servo_1_parked_pw` variable.

Hi, thank you for creating and maintaining `tbot` — it's been really helpful in my Telegram bot development! This PR adds support for the [`chat_member`](https://core.telegram.org/bots/api#chatmemberupdated) update type. These updates are...