Origamibot

- Fixes not getting updates when connection times out (issue 35)

Made update loop more reliable by handling TelegramAPIError for 429 too many requests error

- Fixes unreliable calls to `.unfold()` method on optional `reply_markup` parameter in api requests

- Fixed typing in `send_animation` method, caption had `Optional[Union[str, IO]]` for some reason ¯\_(ツ)_/¯
- Added `explanation` parameter of `send_poll` method to telegram-text auto-convert function, now it can take `Element` like `text` and `caption` in other methods, `explanation_parse_mode` is used instead of `parse_mode` in this case