OpenMQTTGateway v0.9.4beta

This is a beta of v0.9.4, this version can be used for tests only.

It adds the following features/fixes, thanks to the numerous contributors to this version:

• ESP32 deep sleep between BLE scans
• M5Stack and M5stick improved support
• Add CC1101 compatibility for Radiofrequency gateways,thanks to @orrpan
• Automatic wifi reconnection improvments
• Auto discovery with HA fix thanks to @tht
• Fixed Pilight can not send on RX pin thanks to @Legion2
• Add version into SYStoMQTT gateway status
• removed duplicated valueAsASubject option thanks to @Legion2
• remove duplicate code in main\ZgatewayBT.ino (thanks to @Floyddotnet )
• fix 'LoadProhibited' in dumpdevice
  thanks to @Floyddotnet
• Enable automatic erasing of configuration for ESP8266 by a long push to TRIGGER_BUTTON
• Improve Log management by the uase of ArduinoLog
• Add support for DS1820 1-wire temperature sensor(s) thanks to @irswss
• Add support for weather stations thanks to @BlackSmith