- Enhance CMakeLists.txt files.
- Move to Boost Test from Google Test to support pre-C++11 compilers.
- Add more configurations on CI matrix builds.
- Other minor fixes
Fixed `msgpack::object` packing visitor and equal comparison visitor.
NOTE:
In the function `visit_ext(const char* v, uint32_t size)`, v contains
type and size means buffer `v` size. See #175.
Added lacked include files.
Added a test.
Added MSVC build settings on appveyor.
Added old MSVC workaround.
Fixed a variable definition point to meet ANSI-C.
msgpack::unpacked is a typedef of the msgpack::object_handle.
I recommend using msgpack::object_handle. It can be used not only
holding unpacked msgpack objects but also msgpack::objects that are
created by any types.
Replaced unpack() APIs in test codes and examples. They used to use old
APIs.