- remove forward

- update php to 7.1
- update phpunit
- fix test
- change env

Author: s00d

.env.example

@@ -1 +1 @@
-APIKEY=
+ON_APIKEY=

composer.json

@@ -16,11 +16,11 @@
     }
   ],
   "require": {
-    "php": ">=5.5.9",
+    "php": ">=7.1",
     "ext-json": "*"
   },
   "require-dev": {
-    "phpunit/phpunit": "^5",
+    "phpunit/phpunit": "^9.0",
     "vlucas/phpdotenv": "^4.1",
     "larapack/dd": "1.*"
   },