Merge remote-tracking branch 'origin/dev-improved-collector' into dev-improved-collector

Author: Nyholm

composer.json

@@ -19,7 +19,7 @@
         "php": ">=5.5",
         "php-http/client-implementation": "^1.0",
         "php-http/message-factory": "^1.0.2",
-        "php-http/client-common": "^1.1",
+        "php-http/client-common": "^1.2",
         "php-http/cache-plugin": "^1.0",
         "php-http/logger-plugin": "^1.0",
         "php-http/stopwatch-plugin": "^1.0",