fix(typeahead): ArrowUp on last item should not reset highlighted ind…

…ex (#42)

Fixes #41

src/Typeahead.svelte

@@ -92,7 +92,7 @@
   /** @type {(direction: -1 | 1) => void} */
   function change(direction) {
     let index =
-      selectedIndex === results.length - 1 ? 0 : selectedIndex + direction;
+      direction === 1 && selectedIndex === results.length - 1 ? 0 : selectedIndex + direction;
     if (index < 0) index = results.length - 1;
 
     let disabled = results[index].disabled;