refactor(components): remove exported "props"

Closes #17

- Forward events
- Adds style prop, removes exported props

src/components/Accordion/Accordion.svelte

@@ -4,8 +4,10 @@
   export let style = undefined;
 
   import { cx } from '../../lib';
+
+  const _class = cx('--accordion', className);
 </script>
 
-<ul on:click on:mouseover on:mouseenter on:mouseleave {style} class={cx('--accordion', className)}>
+<ul on:click on:mouseover on:mouseenter on:mouseleave class={_class} {style}>
   <slot />
 </ul>