Bumped middleware to 4.0

Author: WyriHaximus

composer.json

@@ -19,16 +19,16 @@
     "php": "^7.0",
     "api-clients/client-services": "^1.0",
     "api-clients/foundation": "dev-master",
-    "api-clients/middleware-json": "^1.0",
-    "api-clients/middleware-token-authorization": "^2.0",
-    "api-clients/middleware-user-agent": "^1.0",
+    "api-clients/middleware-json": "^2.0",
+    "api-clients/middleware-token-authorization": "^3.0",
+    "api-clients/middleware-user-agent": "^2.0",
     "api-clients/pusher": "dev-master",
     "api-clients/rx": "^2.0",
     "api-clients/rx-operators": "^2.0"
   },
   "require-dev": {
-    "api-clients/middleware-delay": "^2.0",
-    "api-clients/middleware-pool": "^2.0",
+    "api-clients/middleware-delay": "^3.0",
+    "api-clients/middleware-pool": "^3.0",
     "api-clients/resource-generator": "dev-master",
     "api-clients/test-utilities": "^4.1"
   },