R2206

• new runtime-define state-machine concept for binding event-action
  pairs to a state of a state-machine
• reworked OLED user-interface code to be more flexible
• added support for parasite power on 1-wire bus
• dimmer update
• added init`done event at the end of initialization
• added mqtt support for dimmer/pwm
• advanced I2C init support
• put cyclic processing into dedicated task on esp32
• fixes for I2C error handling
• fixes for esp32/gpio
• fixes for esp32/adc
• fix LED init
• workaround for I2C init bug of IDF v3.3.x
• update to esp32-idf v3.3.6
• added driver for PCA9685
• HT16K33 must now explicitly configured to avoid mis-detections
• added system`ready event that indicates end of startup
• added support for device specific commands for I2C devices
• enhanced LED modes support
• COMPATIBILITY: clock actions have been renamed to display

R2202

• fix a potential crash on TCP FIN
• added support for rotary encoder
• PCF8574 must now be configured explicitly
• support PCF8574 as I/O-extender
• generic support for GPIO-clusters
• better button debouncing
• added driver for BH1750 (i2c light-sensor)
• added driver for MCP230xx (gpio clustion)
• added support for setting config bitfields via their enum names
• added actions for setting DS18B20 sampling resolution

R2201

• support arguments for actions
• ledstrip action/event/mqtt integration
• uDNS must resolve CNAMEs

R2112

• remove IDF event-task
• make use of socket API an option
• fix syslog hang
• added esp32 UART pin routing support
• fix for UART initialization
• renamed console command to term to avoid confusion
• syslog messages with millisecond accuracy
• influx init should restart influx service after stop
• higher log timestamp resolution
• fix config enum-names parsing
• infux/tcp auto-restart
• fix timer interval parsing for minutes
• button's timing thresholds adjustment

R2111

• full IPv4/IPv6 dual stack integration for devices >= 4MB flash
• complete new integration with LWIP stack
• new DNS and SNTP implementation
• Telnet optimizations
• further reduced RAM consumption
• enhanced Influx transmission
• new LWIP based OTA transmission
• added direct action triggering support in MQTT
• several minor improvements and bugfixes
• added IPv6 support (disabled on 1MB devices per default)
• added support for multiple DNS servers
• porting work for ESP32-IDF V4.x (incomplete)
• updated setenv.sh to work with IDF tools concept
• ROMFS32 fixes
• enhanced module concept for debug messages
• added command for triggering events from shell
• HT16K33 should register as I2C device

R2108

• profiing update and fixes
• HC-SR04 display integration
• fix: float formatting fix
• fix: IPv6 related build issues
• fix: Windows is unable to checkout Atrium due to con.man

R2107

• provide available actions via http as /actions.json
• added webpage for direct action triggering
• mkromfs: sort entries by name
• added generic romfs for d1_lite
• display env variables in default index.html
• fix: ROMFS is invisible if SPIFFS is compiled in
• fix: HC-SR04 is not initializing

R2106

• added support for SSD1306 OLEDs
• added optimized fonts for paged OLEDs
• auto naming for more devices
• added HDC1000 support
• added APDS-9930 support
• added support for LCDs based on HD44780U with PCF8574 interface
• support for multiple named HC-SR04 with env support
• WFC files are now pre-generated (feature-enhanced, non-public WFC)
• fix: crash on MQTT server resetting connection

R2105

• added event accounting
• added SGP30 support
• added CC811B support
• added env command to print variables more readable
• enhanced button event debouncing
• async BME280/BMP280 driver operation
• changed default dmesg size to 1024
• syslog shutdown/resume support
• enhanced handling of multiple I2C devices
• link unique variables to root node
• fix: MQTT may hang in disconnected state, and needs a manual stop
• fix: BMX sensor data should yield NAN on error
• fix: respect LWIP locking
• fix: LWIP related double free
• fix: dmesg size not picked up from config
• fix: WS2812B may not work depending on memory layout on ESP8266
• fix: several minor fixes

R2104

• make 'mqtt start' implicit
• bugfix for shell interface of timer
• fix crash, when starting without config
• man pages update
• ds18b20 driver should verify CRC before accepting the value
• do not trigger WPS per default on startup without config
• provide dimensions for measurements
• updated atriumctrl.py to python version 3
• added support BMP280, BME680
• freed up more RAM
• added a UART monitor (forwards uart rx to syslog)