Drop support for PHP 5.5

This version is no longer supported. Users of this release should upgrade as soon as possible, as they may be exposed to unpatched security vulnerabilities. http://php.net/supported-versions.php

.travis.yml

@@ -10,7 +10,6 @@ cache:
     - "$HOME/.composer/cache"
 
 php:
-  - 5.5
   - 5.6
   - 7.0
   - 7.1

README.md

@@ -9,7 +9,7 @@
 [![Latest Stable Version](https://img.shields.io/packagist/v/Longman/telegram-bot.svg)](https://packagist.org/packages/longman/telegram-bot)
 [![Total Downloads](https://img.shields.io/packagist/dt/Longman/telegram-bot.svg)](https://packagist.org/packages/longman/telegram-bot)
 [![Downloads Month](https://img.shields.io/packagist/dm/Longman/telegram-bot.svg)](https://packagist.org/packages/longman/telegram-bot)
-[![Minimum PHP Version](http://img.shields.io/badge/php-%3E%3D5.6-8892BF.svg)](https://php.net/)
+[![Minimum PHP Version](http://img.shields.io/badge/php-%3E%3D5.6.4-8892BF.svg)](https://php.net/)
 [![License](https://img.shields.io/packagist/l/Longman/telegram-bot.svg)](https://github.com/php-telegram-bot/core/LICENSE.md)
 
 

composer.json

@@ -18,11 +18,12 @@
         }
     ],
     "require": {
-        "php": "^5.5|^7.0",
+        "php": ">=5.6.4|^7.0",
         "ext-pdo": "*",
         "ext-curl": "*",
         "ext-mbstring": "*",
         "monolog/monolog": "^1.23",
+        "monolog/monolog": "^1.23",
         "guzzlehttp/guzzle": "^6.3"
     },
     "require-dev": {