Make heading respect white space and reduce default margin

packages/standard-components/src/Heading.svelte

@@ -4,21 +4,32 @@
   const { styleable } = getContext("sdk")
   const component = getContext("component")
 
-  export let className = ""
   export let type
   export let text = ""
 </script>
 
 {#if type === 'h1'}
-  <h1 class={className} use:styleable={$component.styles}>{text}</h1>
+  <h1 use:styleable={$component.styles}>{text}</h1>
 {:else if type === 'h2'}
-  <h2 class={className} use:styleable={$component.styles}>{text}</h2>
+  <h2 use:styleable={$component.styles}>{text}</h2>
 {:else if type === 'h3'}
-  <h3 class={className} use:styleable={$component.styles}>{text}</h3>
+  <h3 use:styleable={$component.styles}>{text}</h3>
 {:else if type === 'h4'}
-  <h4 class={className} use:styleable={$component.styles}>{text}</h4>
+  <h4 use:styleable={$component.styles}>{text}</h4>
 {:else if type === 'h5'}
-  <h5 class={className} use:styleable={$component.styles}>{text}</h5>
+  <h5 use:styleable={$component.styles}>{text}</h5>
 {:else if type === 'h6'}
-  <h6 class={className} use:styleable={$component.styles}>{text}</h6>
+  <h6 use:styleable={$component.styles}>{text}</h6>
 {/if}
+
+<style>
+  h1,
+  h2,
+  h3,
+  h4,
+  h5,
+  h6 {
+    margin: 0.5em 0;
+    white-space: pre-wrap;
+  }
+</style>