Reading from file

[codeWonderland]

I don't see any capability offhand for this to read a .json file. Is this a feature? If so, what is the syntax? If not, can this be made a feature?

[nlohmann]

You can use the parse function (https://nlohmann.github.io/json/classnlohmann_1_1basic__json_a0923f9749409345a21f8cb15ee95fc0d.html#a0923f9749409345a21f8cb15ee95fc0d) or the operator<< (https://nlohmann.github.io/json/classnlohmann_1_1basic__json_a60ca396028b8d9714c6e10efbf475af6.html#a60ca396028b8d9714c6e10efbf475af6)

You can pass any input stream to it, including an ifstream.

[nlohmann]

I updated the README and added a section on deserialization from file.