Revert to stable Arduino Core 2.3.0

code/platformio.ini

@@ -4,8 +4,8 @@ src_dir = espurna
 data_dir = espurna/data
 
 [common]
-#platform = espressif8266
-platform = espressif8266_stage
+platform = espressif8266
+#platform = espressif8266_stage
 build_flags = -g -DMQTT_MAX_PACKET_SIZE=400 ${env.ESPURNA_FLAGS}
 debug_flags = -DDEBUG_ESP_CORE -DDEBUG_ESP_SSL -DDEBUG_ESP_WIFI -DDEBUG_ESP_HTTP_CLIENT -DDEBUG_ESP_HTTP_UPDATE -DDEBUG_ESP_HTTP_SERVER -DDEBUG_ESP_UPDATER -DDEBUG_ESP_OTA -DDEBUG_TLS_MEM
 build_flags_512k = ${common.build_flags} -Wl,-Tesp8266.flash.512k0.ld
@@ -15,7 +15,7 @@ build_flags_1m = ${common.build_flags} -Wl,-Tesp8266.flash.1m0.ld
 lib_deps =
     https://github.com/xoseperez/Time
     ArduinoJson
-    https://github.com/me-no-dev/ESPAsyncTCP#289a681
+    https://github.com/me-no-dev/ESPAsyncTCP#9b0cc37
     https://github.com/me-no-dev/ESPAsyncWebServer#313f337
     https://github.com/marvinroger/async-mqtt-client#v0.8.1
     PubSubClient