Updated readme + changelog for version v1.11

Updated readme for version v1.10.1

Updated readme for version v1.10

Updated changelog + readme

Updated to Telegram Bot API 4.8

Updated to Telegram Bot API 4.7

Improved PHPDocs

Added support for PHP 7.2+

Updated to Telegram Bot API 4.5 + 4.6
Improved PHPDocs
Updated code indentation to PSR-12 standard
Updated LICENSE file
Updated CHANGELOG file using Keep a Changelog
Missing fields in some types
Dropped support for PHP 5.6

Updated composer.json

Updated to Telegram Bot API 4.3

Updated phpdocs
Missing $poll variable inside `Message` class

Updated to Bot API 4.2