Lean on Arduino log library instead of custom logging methods (#546)

* Lean on Arduino log library instead of custom logging methods

platformio.ini

@@ -61,6 +61,7 @@ extra_configs =
 
 [libraries]
 arduinojson = ArduinoJson@5.13.4
+arduinolog = 1technophile/Arduino-Log#39b0916
 pubsubclient = PubSubClient@2.7
 rc-switch = 1technophile/rc-switch#90adb34
 newremoteswitch = 1technophile/NewRemoteSwitch#8eb980e
@@ -91,6 +92,7 @@ framework = arduino
 lib_deps = 
   ${libraries.pubsubclient}
   ${libraries.arduinojson}
+  ${libraries.arduinolog}
 build_flags =
   -w ; supress all warnings
   '-DjsonPublishing=true'