 
 /**
 Returns true if the left-hand size is smaller than the right-hand size
+
+    let s1 = C4Size(3,4)
+    let s2 = C4Size(4,3)
+    let s3 = C4Size(2,2)
+
+    s1 < s2 //-> false
+    s2 < s3 //-> false
+
 */
 public func < (lhs: C4Size, rhs: C4Size) -> Bool {
     return lhs.width * lhs.height < rhs.width * rhs.height


/**
Returns true if the left-hand size is smaller than or equal to the right-hand size
*/
public func <= (lhs: C4Size, rhs: C4Size) -> Bool {
    return lhs.width * lhs.height <= rhs.width * rhs.height

    
    /**
    Initializes a new C4Size with the dimensions {0,0}
        
        let s = C4Size()
    */
    public init() {
        width = 0
