Lock to react/http 0.8.3 due to blocking bug

Author: phpbg

README.md

@@ -45,4 +45,7 @@ See `example` folder
 There is also a complete example that integrates with ratchet Websockets here: https://github.com/phpbg/mini-httpd-ratchet
 
 ## TODO
-* writing tests
+* writing tests
+
+## Notes
+react/http is locked to 0.8.3 due to https://github.com/reactphp/http/issues/332

composer.json

@@ -19,7 +19,7 @@
   "require": {
     "php": ">=7.0",
     "ext-zlib": "*",
-    "react/http": "^0.8.3",
+    "react/http": "0.8.3",
     "zendframework/zend-validator": "^2.10",
     "zendframework/zend-filter": "^2.8",
     "psr/log": "^1.0",