- Implemented "copy" in terms of "add".
- Added check for JSON Pointer array indices to make sure the complete reference token was processed.
- Added test suite from https://github.com/json-patch/json-patch-tests

The at function throws json::out_of_range.403 when a nonexistent object key is provided (just like the usual at function). This was not documented and users could assume json::out_of_range.404 would be thrown instead.

- Updated documentation.
- Added example code.

Replaces a U+00A0 character with regular space, and fixes a typo.

- All hex literals use upper case letters after the x.
- Fixed sime typos.
- Documented some more functions.

These were the remaining direct calls to alloc.

As we guarantee proper UTF-8 before, we do not need to cope with it later.

We had a lot of issues with failing roundtrips (i.e., parse errors from serializations) in case string were stored in the library that were not UTF-8 encoded. This PR adds an exception in this case.

The example in the documentation on how to "force" an array of arrays was wrong since the first release. Fixed the documentation and added checks for the README unit tests.

fixed conformance with C++17, some members of allocator are depricated and should be used via allocator_traits

adding std::ios_base::binary when opening all_unicode.json.cbor

fixes #805