Improved Array.sort() method; now it can sort user-defined objects if they defined a method called '<=>';
Improved the Sys.sleep() and Sys.alarm(); now both can take floating point numbers and sleep acordingly;

Example for the Array.sort() method:
	class User(name) {
	    method <=>(obj) {
	        self.name <=> obj.name;
	    }
	}

	10.of{User('a'..'z' -> pick)}.sort.each { |user|
	    say user.name;
	}