Changes in mega-20211224 (since mega-20211105):

StefanNetzer (15):
      Update _P043_ClkOutput.ino
      add events
      added TDs recommendations
      cleanup
      resync to GitHub
      Update _P043_ClkOutput.ino
      added PLUGIN_VALUENAME2_043
      Update _P043_ClkOutput.ino
      Update _P043_ClkOutput.ino
      Update _P043_ClkOutput.ino
      added output data type
      replaced all by simple
      restored
      fixed link error
      using output value definition from  P004

TD-er (22):
      [Cleanup] Fix lots of missing delete calls to free memory
      [P095 ILI9341] Convert to use PluginDataStruct
      [P095 ILI9341] Renamed functions in P095 plugin
      [P096 E-ink] Convert to use PluginDataStruct
      [Build] Fix case sensitive mixup in include path
      [Build] Correct correct include path depth
      [P095 P096] Convert to use PluginDataStruct
      Revert changes to P095 and P096 Moved to PR #3835
      [ThermoOLED] Check for successful allocation of display object
      [Domoticz] Only incoming MQTT on tasks with controller linked (#3829)
      [GPS] Add power save commands (Ublox specific)
      [GPS] Add more U-blox specific features
      [GPS] For now, disable U-blox specific settings
      [GPS] Document GPS plugin
      [Password] Add clearPassword command
      [Doc] Add Notepad++ colourise ESPEasy Rules language
      [dashboard] Fix crash on parsing empty command {} (#3873)
      [dashboard] Fix parsing {} and leaving the braces when not a command
      GCC 10.3 Bugfix 1 - Constant literal address fix
      [ClearPassword] Fix typo in command
      [PIO] Restore default envs
      automatically updated release notes for mega-20211224

Ton Huisman (25):
      [Docs] Add How To for starting development on ESPEasy
      [Docs] Add How To for starting development on ESPEasy
      [Docs] How To fix some typos
      [Docs] How To: fix some sphinx syntax issues
      [Docs] Development guide restrucured and extended
      [Docs] How To guide: textual improvements and additions
      [Docs] How To: Extend the text and some corrections
      [P111] Add virtual destructor to MFRC522 library to fix compiler warning
      [P053] Fix support for PMS5003T
      [P053] Remove unneeded #define, minor source formattings
      [Build] Enable Dummy device and Neopixel on ESP32 Custom (script)
      [P053] Leave out invalid event-values for PMS5003T
      [P124] Add plugin Output - I2C Multi Relay
      [P124] Add optional initialization 'protection'
      [P117] Add SCD30 CO2, humidity and temperature sensor
      [P117] Correct slash/backslash confusion/typo
      [P117] Add to TEST_D set
      [P117] Adjust ClockStrechLimit message
      [P117] Add documentation
      [P117] Fix compilation issue `error: narrowing conversion of '2415919104' from 'unsigned int' to 'int' [-Wnarrowing]`
      [P124] Add configurable I2C addresses, add relay state on exit [P114] Add VEML6075 to I2C scanner
      [P124] Add documentation
      [P124] Include in TEST_D build, aad missed documentation file
      [P016] Change plugin title Communication - IR Receive (TSOP4838)
      [P124] Add get command and looping that, fix a small settings bug

svollebregt (7):
      Adding Itho library to main reposity
      Revert "Adding Itho library to main reposity"
      [P118] Adding Itho plugin to main reposity""
      Update _P118_Itho.ino
      Update _P118_Itho.ino
      Further code improvements
      Remove noInterrupts() and Itho library improvements