spacing.scss in sass-zero-0.0.13

- old
+ new

@@ -25,6 +25,6 @@
 
 $size-auto:   auto;
 $size-full:   100%;
 $size-screen: 100vw;
 
-$size-map: ("smaller": $size-2, "small": $size-4, "medium": $size-6, "large": $size-8, "larger": $size-10);
+$size-map: ("x-small": $size-2, "small": $size-4, "medium": $size-6, "large": $size-8, "x-large": $size-10);