Changed react/socket to 0.8

Changed streams and usage of timer.
Adapted unit tests.

Author: skaffille

composer.json

@@ -6,7 +6,7 @@
     "require": {
         "php": ">=5.4",
         "evenement/evenement": "~2.0",
-        "react/socket": "0.4.*",
+        "react/socket": "0.8.*",
         "react/promise": "~2.0"
     },
     "autoload": {