Telegram Bot API 5.2 Support (#870)

* Add new method sendPoll

* getMyCommands

* setMyCommands

* Update doc/api

* 1# Fix Test sendPhoto

The sendPhoto method does not support .gif files, use sendAnimation.

This fix remplace .gif file by .png

* CustomTitle and ChatPermissions support

setChatAdministratorCustomTitle
setChatPermissions

* Update Readme

Update Badge Telegram API Version

* Minor Fix and Fix setChatPhoto

The Telegram Bots api has a bug that they are fixing and gives problems with the previous image. While they don't fix it, the image replacement is the fastest solution

* Minor Fix and Add Test

Fixed setChatPermissions

Test:
- sendDice
- getMyCommands
- setMyCommands
- setChatAdministratorCustomTitle
- setChatPermissions

* Update Changelog and Package.json version

* Fix typos in Changelog

* Add support for poll_answer

From: https://github.com/yagop/node-telegram-bot-api/pull/777

* Add JieJiSS contribution in Changelog

* Add sendPoll Test

* Add unpinAllChatMessages Support

* Add copyMessage support

* Add close and logOut Support

* Add Test + Minor fixes

* Update CHANGELOG

Update version 0.50.1

* Update Readme Bot API Badge

* Update Version to 0.51.0

* Bot API 5.1 support Improved Invite Links

- Added the method createChatInviteLink
- Added the method editChatInviteLink
- Added the method revokeChatInviteLink

* Update version to 0.52.0 and new tests

- Update Changelog
- New Test
- Update version to 0.52.0

* Add new messageTypes

-  voice_chat_started
-  voice_chat_ended
- voice_chat_participants_invited

* Update Changelog and add new MessageType

* New messageTypes and updates

Add support for new messageTypes:
  - chat_invite_link
  - chat_member_updated

Add support for new updates:
 - my_chat_member
 - chat_member

* Telegram Bot API 5.2 Support

* Update Changelog + readme

* Fix Changelog

README.md

@@ -4,7 +4,8 @@
 
 Node.js module to interact with the official [Telegram Bot API](https://core.telegram.org/bots/api).
 
-[![Bot API](https://img.shields.io/badge/Bot%20API-v.5.1-00aced.svg?style=flat-square&logo=telegram)](https://core.telegram.org/bots/api)
+
+[![Bot API](https://img.shields.io/badge/Bot%20API-v.5.2-00aced.svg?style=flat-square&logo=telegram)](https://core.telegram.org/bots/api)
 [![npm package](https://img.shields.io/npm/v/node-telegram-bot-api?logo=npm&style=flat-square)](https://www.npmjs.org/package/node-telegram-bot-api)
 [![Build Status](https://img.shields.io/travis/yagop/node-telegram-bot-api/master?style=flat-square&logo=travis)](https://travis-ci.org/yagop/node-telegram-bot-api)
 [![Coverage Status](https://img.shields.io/codecov/c/github/yagop/node-telegram-bot-api?style=flat-square&logo=codecov)](https://codecov.io/gh/yagop/node-telegram-bot-api)