v3/master
Updated included headers to support compilation on Windows (using Visual C++) - most of posix related functions and constants in unistd.h can be found in io.h in Visual C++ - introduced src/compat/msvc.h to adjust for compiler differences (and avoid updating code with #ifdef blocks for Windows support) - removed some included headers that are not needed (both on Unix and Windows builds)
Minor changes to debug_log_writer - Removed unused m_first data member. - Explicitly delete copy constructor and assignment operator. - Removed unused included headers.
Use default keyword to implement constructor/destructor - Addresses SonarCloud cpp:S3490 issue (Special member function should not be defined unless a non standard behavior is required)