Updated to stable versions for all dependencies

Author: WyriHaximus

composer.json

@@ -3,8 +3,6 @@
   "homepage": "https://php-api-clients.org/clients/travis/",
   "description": "Async first TravisCI PHP API Client",
   "license": "MIT",
-  "minimum-stability": "dev",
-  "prefer-stable": true,
   "authors": [
     {
       "name": "Cees-Jan Kiewiet",
@@ -18,7 +16,7 @@
   "require": {
     "php": "^7.0",
     "api-clients/client-services": "^1.0",
-    "api-clients/foundation": "dev-master",
+    "api-clients/foundation": "^1.0",
     "api-clients/middleware-json": "^3.0||^2.0",
     "api-clients/middleware-token-authorization": "^3.0",
     "api-clients/middleware-user-agent": "^2.0",
@@ -29,7 +27,7 @@
   "require-dev": {
     "api-clients/middleware-delay": "^3.0",
     "api-clients/middleware-pool": "^3.0",
-    "api-clients/resource-generator": "dev-master",
+    "api-clients/resource-generator": "^1.0",
     "api-clients/test-utilities": "^4.1"
   },
   "suggest": {