finish custom class and improved options overhaul

src/routes/+page.svelte

@@ -139,7 +139,7 @@
 	<ToggleGroup
 		name="example-toggle-group"
 		label="Toggler"
-		items={['item one', 'item two', 'item three']}
+		options={['item one', 'item two', { value: 'complex', label: 'Complex item' }]}
 	/>
 </div>