• Updated compiler toolchain to ESP-IDF 4.3
  
• Removal of memory leak
  
• Improved error handling during startup (check PSRAM and camera with remark in logfile)
  
• MQTT: implemented raw value additionally, removal of regex contrain
  
• Normalized Parameter MaxRateValue to "change per minute"
  
• HTML: improved input handling
  
• Corrected error handling: in case of error the old value, rate, timestamp are not transmitted any more