- Removed the ToJson(json_t) method
- The FromJson method expects to receive a JSON node of type object (as per added documentation)
- Unlike elsewhere, we need to use iterators for the Save() method to allow us to remove items from the array
Clang-format sees the text behind `#pragma region` as code and formats it. Instead of stating the copyright and date there, it's now in the comment block right below it. The text "Copyright" is left in the `#pragma region` line, as clang-format sees it as a single identifier.
I took the opportunity to normalize the dates, and add the copyright notice to the source files where it was missing them (except for third-party and the generated resources.h file).