Allow Tail { "Key": "Value" } Comma [@ READ ONLY]

[ClaudiuHKS]

Example of current use ->

Only { "Name": "Michael", "Age": 36 }

Example of use after this feature request ->

Either { "Name": "Michael", "Age": 36 } or { "Name": "Michael", "Age": 36, }

Note! This feature request should only affect the functions that read the trees. Those functions that write should remain the same.

[nlohmann]

This library only accepts valid JSON, and trailing commas are not allowed, see