Bumped child process packages and open up Windows support again

Author: WyriHaximus

composer.json

@@ -16,7 +16,7 @@
     "react/promise": "~2.2",
     "react/promise-stream": "^1.1",
     "react/stream": "^1.0 || ^0.7 || ^0.6 || ^0.5 || ^0.4",
-    "wyrihaximus/react-child-process-pool": "^1.3"
+    "wyrihaximus/react-child-process-pool": "^1.5"
   },
   "require-dev": {
     "clue/block-react": "^1.1",