0.4.1

• remove all NTP related code (due to frickelzeugs#84)
• removed all WiFi related code
• enabled ethernet connection (DHCP)
• disabled breathing LED when idle
• disabled external ringer signal (the pin is used in the ETH connection)
• use GPIO14 as input for the doorbell ring event (for a dedicated button to just ring)
• use GPIO15 as output for a buzzer for an acoustic feedback while the doorbell button is pressed

Full Changelog: https://github.com/j4velin/FingerprintDoorbell/commits/0.4.1