Nested routes

Fixes #262

test/app/app/App.html

@@ -1,6 +0,0 @@
-{#if preloading}
-	<progress class='preloading-progress' value=0.5/>
-{/if}
-
-<svelte:component this={Page} {...props}/>
-

test/app/app/client.js

@@ -1,13 +1,11 @@
 import { init, prefetchRoutes } from '../../../runtime.js';
 import { Store } from 'svelte/store.js';
-import { routes } from './manifest/client.js';
-import App from './App.html';
+import { manifest } from './manifest/client.js';
 
 window.init = () => {
 	return init({
 		target: document.querySelector('#sapper'),
-		App,
-		routes,
+		manifest,
 		store: data => new Store(data)
 	});
 };

test/app/app/server.js

@@ -4,8 +4,7 @@ import express from 'express';
 import serve from 'serve-static';
 import sapper from '../../../dist/middleware.ts.js';
 import { Store } from 'svelte/store.js';
-import { routes } from './manifest/server.js';
-import App from './App.html'
+import { manifest } from './manifest/server.js';
 
 let pending;
 let ended;
@@ -87,8 +86,7 @@ const middlewares = [
 	},
 
 	sapper({
-		App,
-		routes,
+		manifest,
 		store: () => {
 			return new Store({
 				title: 'Stored title'