v1.4.0 to fix compiler errors

### Releases v1.4.0

1. Fix compiler errors due to conflict to some libraries.
2. Add complex examples.

Author: khoih-prog

README.md

@@ -174,7 +174,9 @@ The catch is **your function is now part of an ISR (Interrupt Service Routine),
 
 1. [`Arduino IDE 1.8.15+`](https://www.arduino.cc/en/Main/Software)
 2. [`ESP8266 Core 3.0.0+`](https://github.com/esp8266/Arduino) for ESP8266-based boards. [![Latest release](https://img.shields.io/github/release/esp8266/Arduino.svg)](https://github.com/esp8266/Arduino/releases/latest/). To use ESP8266 core 2.7.1+ for LittleFS. 
-3. [`Blynk_WM library v1.5.0+`](https://github.com/khoih-prog/Blynk_WM) to use with some examples. To install. check [![arduino-library-badge](https://www.ardu-badge.com/badge/Blynk_WiFiManager.svg?)](https://www.ardu-badge.com/Blynk_WiFiManager)
+3. [`Blynk_WM library v1.6.0+`](https://github.com/khoih-prog/Blynk_WM) to use with some examples. To install. check [![arduino-library-badge](https://www.ardu-badge.com/badge/Blynk_WiFiManager.svg?)](https://www.ardu-badge.com/Blynk_WiFiManager)
+4. [`SimpleTimer library`](https://github.com/jfturcot/SimpleTimer) to use with some examples.
+
 
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