Required fixes:
- CallbackQuery is now comparable.
- Message.effective_attachment, Message.photo,
Message.new_chat_members, Message.new_chat_photo &
Game.text_entitties semantic fixes - when they are not defined,
return an empty list.
- Docstring fix to Update class.
* New fields channel_post and edited_channel_post for Update
refs #468
* setGameScore() changes
- Changed behaviour: messages with high scores will be update with new
high scores by default. (documentation fix)
- Use (new) disable_edit_message in setGameScore to disable the above new
behaviour.
- The edit_message parameter from setGameScore is no longer in use. For
backward compatibility, it will be taken into account for a while,
unless disable_edit_message is passed explicitly.
refs #468
* New field forward_from_message_id for Message.
refs #468
* New parameter cache_time for answerCallbackQuery
refs #468
* replykeyboardhide renamed to replykeyboardremove
refs #468
* Unitests for updated setGameScore semantics
refs #468
* Backward compatibility for ReplyKeyboardHide
refs #468
* Fix docstrings of wrapper methods in Message
* Unitest new field forward_from_message_id of Message
refs #468
* Fix testMaxCaptionLength
Telegram servers changed their behaviour - now they truncate a long
caption instead of returning an error.
* MessageHandler: Added support for channel posts
* Fix flake8 complaints in a manner which yapf will like it too.
* fix rst markup
