ANSI codes support

ANSI codes (e.g. colours) are not enabled by default on Windows cmd console.

To enable, add this to the beginning of main:

#ifdef _WIN32
	HANDLE hOut = GetStdHandle(STD_OUTPUT_HANDLE);
	DWORD dwMode;
	GetConsoleMode(hOut, &dwMode);
	SetConsoleMode(hOut, dwMode | ENABLE_VIRTUAL_TERMINAL_PROCESSING);
#endif