feat(scope): new and improved scope implementation

- Speed improvements (about 4x on flush phase)
- Memory improvements (uses no function closures)
- Break $eval into $apply, $dispatch, $flush
- Introduced $watch and $observe

Breaks angular.equals() use === instead of ==
Breaks angular.scope() does not take parent as first argument
Breaks scope.$watch() takes scope as first argument
Breaks scope.$set(), scope.$get are removed
Breaks scope.$config is removed
Breaks $route.onChange callback has not "this" bounded

2 files changed, 14 insertions, 16 deletions

diff --git a/test/scenario/SpecRunnerSpec.js b/test/scenario/SpecRunnerSpec.js
index 0e1ffac1..92f000ba 100644
--- a/test/scenario/SpecRunnerSpec.js
+++ b/test/scenario/SpecRunnerSpec.js
@@ -31,14 +31,13 @@ describe('angular.scenario.SpecRunner', function() {
     $window.setTimeout = function(fn, timeout) {
       fn();
     };
-    $root = angular.scope({
-      emit: function(eventName) {
-        log.push(eventName);
-      },
-      on: function(eventName) {
-        log.push('Listener Added for ' + eventName);
-      }
-    });
+    $root = angular.scope();
+    $root.emit = function(eventName) {
+      log.push(eventName);
+    };
+    $root.on = function(eventName) {
+      log.push('Listener Added for ' + eventName);
+    };
     $root.application = new ApplicationMock($window);
     $root.$window = $window;
     runner = $root.$new(angular.scenario.SpecRunner);
diff --git a/test/scenario/dslSpec.js b/test/scenario/dslSpec.js
index a07d411e..5485fe52 100644
--- a/test/scenario/dslSpec.js
+++ b/test/scenario/dslSpec.js
@@ -10,14 +10,13 @@ describe("angular.scenario.dsl", function() {
       document: _jQuery("<div></div>"),
       angular: new angular.scenario.testing.MockAngular()
     };
-    $root = angular.scope({
-      emit: function(eventName) {
-        eventLog.push(eventName);
-      },
-      on: function(eventName) {
-        eventLog.push('Listener Added for ' + eventName);
-      }
-    });
+    $root = angular.scope();
+    $root.emit = function(eventName) {
+      eventLog.push(eventName);
+    };
+    $root.on = function(eventName) {
+      eventLog.push('Listener Added for ' + eventName);
+    };
     $root.futures = [];
     $root.futureLog = [];
     $root.$window = $window;