Temporarily reverting to ESPAsyncWebserver#313f337 (#295)

code/platformio.ini

@@ -14,7 +14,7 @@ lib_deps =
     https://github.com/xoseperez/Time
     ArduinoJson
     https://github.com/me-no-dev/ESPAsyncTCP#a57560d
-    https://github.com/me-no-dev/ESPAsyncWebServer#63b5303
+    https://github.com/me-no-dev/ESPAsyncWebServer#313f337
     https://github.com/marvinroger/async-mqtt-client#v0.8.1
     PubSubClient
     Embedis