Update 'range' modifier

* use - instead of , to separate custom modifier values

Author: Adam Plesnik

src/index.ts

@@ -86,7 +86,7 @@ export = plugin(
 
 function splitAndCombine(values: string, modifiers: string | null) {
   const valueArray = (values || '').split(' ')
-  const modifierArray = (modifiers || ['0,100%'].join(',')).split(',')
+  const modifierArray = (modifiers || ['0-100%'].join('-')).split('-')
 
   const combinedValues = [valueArray[0], modifierArray[0], valueArray[1], modifierArray[1]]