The v0.1.2 release of tbot minimizes the breaking change caused by Bot API v4.4. The cause of the breaking change is `Message.sticker` reused for animated stickers, which use `tgs` instead of `webp`, yet old code will still see the animated stickers as plain ones. tbot addresses this by adding a separate handler for animated stickers while the old handlers for stickers won't be fired. Also, this release adds the is_animated field to types::sticker::Set. In the v0.2 release, this field will be instead replaced with an enum of sticker set kinds.