Bumped middleware to 3.0

Author: WyriHaximus

composer.json

@@ -10,7 +10,7 @@
     ],
     "require": {
         "php": "^7.0",
-        "api-clients/middleware": "^2.0"
+        "api-clients/middleware": "^3.0"
     },
     "require-dev": {
         "api-clients/test-utilities": "^4.1",