issue/console: Upgrade to console ^4.0

- Now min version is php 7.2

Author: cambell-prince

.travis.yml

@@ -1,9 +1,7 @@
 dist: trusty
 language: php
 php:
-  - '5.6'
-  - '7.0'
-  - hhvm
+  - '7.2'
 
 before_install:
   - travis_retry composer self-update

composer.json

@@ -11,12 +11,12 @@
     }
   ],
   "require": {
-    "php": ">5.6",
-    "symfony/console": "^3.0"
+    "php": ">7.1",
+    "symfony/console": "^4.0"
   },
   "require-dev": {
     "phpunit/phpunit": "^5.3",
-    "fabpot/php-cs-fixer": "^1.11"
+    "fabpot/php-cs-fixer": "^2.16"
   },
   "autoload": {
     "psr-4": {