* Add support for SenseAir S8 CO2 sensor to be enabled with define
USE_SENSEAIR in user_config.h
* Add support for Domoticz Air Quality
sensor to be used by MH-Z19(B) and SenseAir sensors
5.8.0m
* Rewrite code (partly) using Google C++ Style Guide
(https://google.github.io/styleguide/cppguide.html)
* Allow empty
MqttHost name by using option 0
* Allow Mqtt server mDNS lookup only
when MqttHost name is empty (#1026)
* Change Ws2812 clock with more
flexible version (#1019)
* Add German language file (#1022)
* Support
connecting to MQTT brokers without userid and/or password (#1023)
* Add
commands PwmRange 1,255..1023 and PwmFrequency 1,100..4000 (#1025)
5.1.0 20170513
* Fix Offline/Removal of retained topic when FullTopic is changed
* Add FullTopic to MQTT Configuration and Information web page
* Adde license model GPLv3 (#188)