Merge pull request #9 from reactphp-parallel/upgrade-to-test-utilities-v3

Upgrade to test utilities v3

Author: WyriHaximus

composer.json

@@ -18,7 +18,7 @@
         "react-parallel/event-loop": "^1.0",
         "react/event-loop": "^1.1",
         "react/promise": "^2.7",
-        "wyrihaximus/async-test-utilities": "^2.2",
+        "wyrihaximus/async-test-utilities": "^3.2",
         "wyrihaximus/iterator-or-array-to-array": "^1.1",
         "wyrihaximus/pool-info": "^1.0"
     },