Recently I've got a good news: my pull request on GitHub to Pybind11 project has been accepted by the project maintainers. Pybind11 is a C++ library for exposing C++ code to Python as binary modules. Pybind11 is similar to Boost.Python but it does not require linking against a pre-built library, so it is easier to use.
My pull request is very small: I've added a method to check Python exception types from C++ code more easily. However, I'm not a professional developer and C++ is often considered a "hardcore language", so I'm proud that Pybind11 maintainers have decided that my small contribution is worthy to be included in their project.