Introduce boot.js: this finally makes it possible to load and run Todomvc

lib/observe.dart

Index: lib/observe.dart
diff --git a/lib/observe.dart b/lib/observe.dart
index 42144caba568d58fa378f1b7bc7c3bdca07fd504..926f624c6bdf06811d204396e41454d1c486542d 100644
--- a/lib/observe.dart
+++ b/lib/observe.dart
@@ -13,23 +13,6 @@ import 'dart:async';
 import 'dart:html' show PathObserver;
 import 'package:observe/observe.dart';
 
-/**
- * Use `@observable` to make a property observable.
- * The overhead will be minimal unless they are actually being observed.
- */
-const observable = const _ObservableAnnotation();
-
-/**
- * The type of the `@observable` annotation.
- *
- * Library private because you should be able to use the [observable] field
- * to get the one and only instance. We could make it public though, if anyone
- * needs it for some reason.
- */
-class _ObservableAnnotation {
-  const _ObservableAnnotation();
-}
-
 // Inspired by ArrayReduction at:
 // https://raw.github.com/rafaelw/ChangeSummary/master/util/array_reduction.js
 // The main difference is we support anything on the rich Dart Iterable API.
@@ -121,7 +104,7 @@ class ListPathObserver<E, P> extends ObservableBase {
   void _scheduleReduce(_) {
     if (_scheduled) return;
     _scheduled = true;
-    queueChangeRecords(_reduce);
+    runAsync(_reduce);
   }
 
   _observeItems(int lengthAdjust) {
@@ -129,7 +112,7 @@ class ListPathObserver<E, P> extends ObservableBase {
       for (int i = 0; i < lengthAdjust; i++) {
         int len = _observers.length;
         var pathObs = new PathObserver(list, '$len.$_itemPath');
-        _subs.add(pathObs.values.listen(_scheduleReduce));
+        _subs.add(pathObs.bindSync(_scheduleReduce));

[Jennifer Messerly, 2013/07/27 02:18:44]

this should be:

  pathObs.changes.listen(_scheduleReduce);

... so it won't schedule if not needed. bindSync will pass the value
immediately.

[Siggi Cherem (dart-lang), 2013/07/30 00:10:29]

Done. Thanks, I saw 'values' went away, but didn't realize that it was replaced
by 'changes'.

         _observers.add(pathObs);
       }
     } else if (lengthAdjust < 0) {