Arduino Json V6 library issue 'DynamicJsonBuffer' was not declared in this scope

[zoomx]

Since V6 version of ArduinoJson library you get this (and others) error when compiling
'DynamicJsonBuffer' was not declared in this scope
That's because many changes were made.
https://arduinojson.org/v6/doc/upgrade/
See also here
https://github.com/bblanchon/ArduinoJson/issues/756
and here as example of upgrading code
https://github.com/tobozo/M5Stack-SD-Updater/commit/7610cb1ea17d05434d24723886f9b51721adfb69

Using ArduinoJson version 5.13.4 still compile, but since new Arduino IDE come with 6 version maybe it's better to add something in readme

[FordPrfkt]

I have a implementation the adds compatibilty with V6.
#65

[cyprien-pixngraph]

Thank you FordPrfkt ! It could be a good idea to fork this project because gmag11 seems to does not support it anymore...

[cyprien-pixngraph]

Or perhaps gmag11 can grant you permissions to merge commits to this project...