/**
 * Return a value interpolated from the settings.spaces stack
 *
 * @param 			{String} 			$size 			The space size wanted. Must exist in the settings.sizes stack
 * @return 			{Number} 							The actual space value
 *
 * @example
 * .my-cool-section {
 * 		padding : s-pace(big);
 * }
 *
 * @author 			Olivier Bossel <olivier.bossel@gmail.com> (https://olivierbossel.com)
 */
@function s-space($size) {
  @return s-interpolate("settings.spaces", $size);
}