ground units can now attack other ground units !
	modified:   LibreSTR/CMakeLists.txt
	modified:   LibreSTR/GameObject.cpp
	modified:   LibreSTR/GameObject.h
	modified:   LibreSTR/GameState.cpp
	modified:   LibreSTR/GameState.h
	modified:   LibreSTR/MainMenu.cpp
	modified:   LibreSTR/NewGameMenu.cpp
	modified:   LibreSTR/NewGameMenu.h
	modified:   LibreSTR/maps/GameMap.cpp
	modified:   LibreSTR/maps/GameMap.h
	new file:   LibreSTR/maps/GameMapEvent.cpp
	new file:   LibreSTR/maps/GameMapEvent.h
	new file:   LibreSTR/maps/GameMapEventListener.cpp
	new file:   LibreSTR/maps/GameMapEventListener.h
	new file:   LibreSTR/maps/GameMapEventThrower.cpp
	new file:   LibreSTR/maps/GameMapEventThrower.h
	modified:   LibreSTR/maps/PlayerMap.cpp
	modified:   LibreSTR/units/AttackGroundUnitTask.cpp
	modified:   README.md
	modified:   assets/worker.res