Version 2.3-beta4

Version 2.3-beta4

fix: itho status signed value not correctly handled
fix: itho settings, fixed support for signed values, < 32 bit wide values and added support for float values
fix: allocate large MQTT buffer to prevent constant buffer resizing
fix: reboot after file system format
fix: format button not reachable in case of file system issues / debug page not loading. Moved to rest page.
fix: small textual changes on the webinterface
fix: upgrade to ArduinoJSON 6.18.5
fix: switch to ESPAsyncWebServer branch with several fixes

Hardware rev.2.x:
https://github.com/arjenhiemstra/ithowifi/raw/master/compiled_firmware_files/hardware_rev_2/nrgitho-hw2-v2.3-beta4.bin

Non-cve hardware module rev.1.x:
https://github.com/arjenhiemstra/ithowifi/raw/master/compiled_firmware_files/non-cve_rev_1/nrgitho-noncve-v2.3-beta4.bin