Updated to middleware 4.0

Author: WyriHaximus

composer.json

@@ -15,10 +15,10 @@
         "php": "^7.0",
         "api-clients/client-services": "^1.1",
         "api-clients/foundation": "dev-master",
-        "api-clients/middleware-http-exceptions": "^1.0",
-        "api-clients/middleware-json": "^1.0",
-        "api-clients/middleware-oauth1": "^3.0",
-        "api-clients/middleware-user-agent": "^1.0",
+        "api-clients/middleware-http-exceptions": "^2.0",
+        "api-clients/middleware-json": "^2.0",
+        "api-clients/middleware-oauth1": "^4.0",
+        "api-clients/middleware-user-agent": "^2.0",
         "api-clients/rx": "^2.0",
         "api-clients/rx-operators": "^2.0",
         "react/http-client": "^0.4.17"