API 4.9 update

[Poolitzer]

Basketball was added by @code1mountain, rest done by me.
Open questions:

• How to test for via_bot attribute of a Message
• Do we want to offer the mime types of the InlineQueryResults thumb urls as constants? If yes, where?

[Bibo-Joshi]

Thanks for the quick PR! Will have a closer look later today/on the weekend

• How to test for via_bot attribute of a Message

We're currently only testing answer_inline_query by mocking. But as setting the attribute is not our thing to do, but TGs, personally I'd say test manually and that's it.

• Do we want to offer the mime types of the InlineQueryResults thumb urls as constants? If yes, where?

Can you test, if TG servers infere that automatically? If yes: I don't really see a need for someone setting that manually and hence, for adding the corresponding constants

[Poolitzer]

@Bibo-Joshi The docs say telegrams server automatically assume JPEG. I can test it if you want

[Bibo-Joshi]

Hey, had a closer look.

• Docs need checking, as mentioned offline
• test_message should be updated regarding to/from_dict/json
• Depending on your tests, constants for thumb_mime_type would be good imo