SDK with PHP 7.2

Author: dforsber

wscli-php-sdk/composer.json

@@ -32,15 +32,15 @@
     }
   ],
   "require": {
-    "php": ">=5.6.0",
+    "php": ">=7.1.0",
     "phpseclib/phpseclib": "^2.0",
     "monolog/monolog": "^1.23",
     "isecurefi/swagger-wscli-php-sdk": "*",
     "symfony/yaml": "^3.3",
     "sebastian/version": "^2.0"
   },
   "require-dev": {
-    "phpunit/phpunit": "^5.7 || ^6.0",
+    "phpunit/phpunit": "^7.0",
     "squizlabs/php_codesniffer": "^3.1",
     "friendsofphp/php-cs-fixer": "^2.3",
     "phpmd/phpmd": "^2.6",