Release 0.52.0

• CBOR support compliant with RFC7049
• CBOR/NODE with the same interaface as JSON/NODE
• cross JSON/CBOR serialization

Release 0.51.1

• json: fix undefined behavior in charconv implementation for C++11

Release 0.51.0

It's the first release after the repository was deleted by accident and includes:

• the implementation strictly complies with RFC7159 / ECMA-404
• supports C++'s fundamental and compound types
• supports good part of the standard library types including the container library

See the readme for details.