Update README.md and CHANGELOG.md files

CHANGELOG.md

@@ -3,6 +3,10 @@
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## [1.6.6] 2017-02-23
+### Fix
+- Issue #82. Fix critical bug on Sonoff Dual
+
 ## [1.6.5] 2017-02-22
 ### Added
 - Option to backup and restore settings from the web interface

README.md

@@ -4,7 +4,7 @@ ESPurna ("spark" in Catalan) is a custom firmware for ESP8266 based smart switch
 It was originally developed with the **[IteadStudio Sonoff](https://www.itead.cc/sonoff-wifi-wireless-switch.html)** in mind but now it supports a growing number of ESP8266-based boards.
 It uses the Arduino Core for ESP8266 framework and a number of 3rd party libraries.
 
-**Current Release Version is 1.6.5**, read the [changelog](https://bitbucket.org/xoseperez/espurna/src/master/CHANGELOG.md).
+**Current Release Version is 1.6.6**, read the [changelog](https://bitbucket.org/xoseperez/espurna/src/master/CHANGELOG.md).
 
 ## Features
 

code/espurna/config/general.h

@@ -120,7 +120,9 @@
 // MQTT
 // -----------------------------------------------------------------------------
 
+#ifndef MQTT_USE_ASYNC
 #define MQTT_USE_ASYNC          0
+#endif
 
 #define MQTT_SERVER             ""
 #define MQTT_PORT               1883

code/espurna/config/version.h

@@ -1,4 +1,4 @@
 #define APP_NAME                "ESPurna"
-#define APP_VERSION             "1.6.5"
+#define APP_VERSION             "1.6.6"
 #define APP_AUTHOR              "xose.perez@gmail.com"
 #define APP_WEBSITE             "http://tinkerman.cat"