modified:   implementations/mysql_world_model.cpp
	modified:   implementations/mysql_world_model.hpp
	modified:   implementations/sqlite3_world_model.cpp
	modified:   implementations/sqlite3_world_model.hpp
	modified:   libwm/include/world_model.hpp
	modified:   libwm/src/CMakeLists.txt
	new file:   libwm/src/world_model.cpp