Unmount and cleanly refresh mount points.

api/mount.js

@@ -1,14 +1,26 @@
 "use strict"
 
+var Vnode = require("../render/vnode")
 var coreRenderer = require("../render/render")
 var autoredraw = require("../api/autoredraw")
+var dummy = {view: function() {}}
 
 module.exports = function(renderer, pubsub) {
 	return function(root, component) {
+		pubsub.unsubscribe(root.redraw)
+
 		var run = autoredraw(root, renderer, pubsub, function() {
-			renderer.render(root, {tag: component})
+			renderer.render(
+				root,
+				Vnode(component === null ? dummy : component, undefined, undefined, undefined, undefined, undefined)
+			)
 		})
 
 		run()
+
+		if (component === null) {
+			pubsub.unsubscribe(root.redraw)
+			delete root.redraw
+		}
 	}
 }