Pybotx

Added

* Add `file_name` param to `download_file` method to provide ability to change the returned file name.

Fixed

* Memory leak in bot.tasks collection.

Added

* Add method for uploading files to chat.
* Add method for downloading files from chat.

Changed

* Add `data` and `files` fields to `HTTPRequest` for sending multipart/form-data in request.
* Add `expected_type` field to `HTTPRequest` and `expected_type` property to `BaseBotXMethod`
to allow interacting with non JSON responses.
* Add `should_process_as_error` field to `HTTPRequest` so that errors that are not in
the range of 400 to 599 can be added.
* Add `raw_data` to `HTTPResponse`so that you can process raw content of response.

Added

- Add `embed_mentions` argument in `from_message` method.

Fixed

- Fix `EMBED_MENTION_RE` expression

Fixed

* Bot's method `authorize()` now not fall if cant take some tokens. Just logging and skip invalid credentials.