Update README.md

README.md

@@ -6,7 +6,7 @@ ST_Anything v2.9.3
 **WARNING** - If using an ESP8266, make sure you are using v2.4.2 of the Arduino ESP8266 Board manager (v2.4/2.4.1 introduced a memory leak causing ST_Anythign to crash after an hour or two) along with Arduino IDE 1.8.8.
 
 **Recent History:**
-- v2.9.3 - Significant enhancements to the EX_Servo class and Child Device Handler - Thanks Jeff Albers!
+- v2.9.3 - Significant enhancements to the EX_Servo class and Child Device Handler - Thanks Jeff Albers!  ALso, an attempt to prevent duplicate child devices from being created.
 - v2.9.2 - Added support for I2C devices - AM2320(temp, humid), TSL2561(lux), MAX44009(lux), BH1750(lux), BME280(temp,humid,pressure), BMP280(temp, pressure), and improved TCS34725(color lux).  Added ST_Anything_I2C_ESP8266WiFi.ino example sketch to demonstrate I2C sensors.