Allow to use on PHP 7.2

Author: keradus

.travis.yml

@@ -14,6 +14,8 @@ matrix:
           env: COMPOSER_FLAGS="--prefer-stable"
         - php: 7.1
           env: COMPOSER_FLAGS="--prefer-stable"
+        - php: 7.2
+          env: COMPOSER_FLAGS="--prefer-stable"
         - php: nightly
           env: COMPOSER_FLAGS="--dev --ignore-platform-reqs"
     allow_failures:

composer.json

@@ -15,7 +15,7 @@
         }
     ],
     "require": {
-        "php": "^5.6 || >=7.0 <7.2"
+        "php": "^5.6 || ^7.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^4.8.35 || ^5.4.3"