modified:   CMakeLists.txt
	renamed:    connection.cpp -> asio_impl/connection.cpp
	renamed:    connection.hpp -> asio_impl/connection.hpp
	renamed:    server_impl.hpp -> asio_impl/server_impl.hpp
	new file:   connection_base.hpp
	modified:   connection_manager.cpp
	modified:   connection_manager.hpp
	modified:   server.cpp