Introduced new TimeManager class with much better offline handling. Refactoring.

platformio.ini

@@ -14,13 +14,15 @@ default_envs = nodemcuv2
 [env]
 platform = espressif8266
 board = nodemcuv2
+build_flags = -DUSING_TIM_DIV16=1
 framework = arduino
 lib_deps = 
-    adafruit/Adafruit BusIO@^1.15.0
-    adafruit/Adafruit NeoMatrix@^1.3.0
-    adafruit/Adafruit NeoPixel@^1.11.0
-    densaugeo/base64@^1.4.0
-    tzapu/WiFiManager@^0.16.0
+	adafruit/Adafruit BusIO@^1.15.0
+	adafruit/Adafruit NeoMatrix@^1.3.0
+	adafruit/Adafruit NeoPixel@^1.11.0
+	densaugeo/base64@^1.4.0
+	khoih-prog/ESP8266TimerInterrupt@^1.6.0
+	tzapu/WiFiManager@^0.16.0
 
 [env:nodemcuv2]
 monitor_speed = 115200