redirect to external URLs - closes #490

test/apps/redirects/src/routes/index.html

@@ -1,4 +1,5 @@
 <h1>root</h1>
 
 <a href="redirect-from">redirect from</a>
-<a href="redirect-to-root">redirect to root</a>
+<a href="redirect-to-root">redirect to root</a>
+<a href="redirect-to-external">redirect to external</a>

test/apps/redirects/src/routes/redirect-to-external.html

@@ -0,0 +1,9 @@
+<h1>unredirected</h1>
+
+<script>
+	export default {
+		preload() {
+			this.redirect(301, 'https://example.com');
+		}
+	};
+</script>