feat(change_detection): add support for pipes

modules/angular2/change_detection.js

@@ -3,7 +3,6 @@ export {Lexer} from './src/change_detection/parser/lexer';
 export {Parser} from './src/change_detection/parser/parser';
 export {ContextWithVariableBindings}
     from './src/change_detection/parser/context_with_variable_bindings';
-
 export {ExpressionChangedAfterItHasBeenChecked, ChangeDetectionError}
     from './src/change_detection/exceptions';
 export {ChangeRecord, ChangeDispatcher, ChangeDetector,
@@ -12,9 +11,15 @@ export {ProtoChangeDetector, DynamicProtoChangeDetector, JitProtoChangeDetector}
     from './src/change_detection/proto_change_detector';
 export {DynamicChangeDetector}
     from './src/change_detection/dynamic_change_detector';
+export * from './src/change_detection/pipes/pipe_registry';
+export * from './src/change_detection/pipes/pipe';
+
 
 import {ProtoChangeDetector, DynamicProtoChangeDetector, JitProtoChangeDetector}
     from './src/change_detection/proto_change_detector';
+import {PipeRegistry} from './src/change_detection/pipes/pipe_registry';
+import {ArrayChanges} from './src/change_detection/pipes/array_changes';
+import {NullPipe} from './src/change_detection/pipes/null_pipe';
 
 export class ChangeDetection {
   createProtoChangeDetector(name:string):ProtoChangeDetector{
@@ -23,15 +28,30 @@ export class ChangeDetection {
   }
 }
 
+export var defaultPipes = {
+  "[]" : [
+    {
+      "supports" : ArrayChanges.supportsObj,
+      "pipe" : () => new ArrayChanges()
+    },
+    {
+      "supports" : NullPipe.supportsObj,
+      "pipe" : () => new NullPipe()
+    }
+  ]
+};
+
+var _registry = new PipeRegistry(defaultPipes);
+
 export class DynamicChangeDetection extends ChangeDetection {
   createProtoChangeDetector(name:string):ProtoChangeDetector{
-    return new DynamicProtoChangeDetector();
+    return new DynamicProtoChangeDetector(_registry);
   }
 }
 
 export class JitChangeDetection extends ChangeDetection {
   createProtoChangeDetector(name:string):ProtoChangeDetector{
-    return new JitProtoChangeDetector();
+    return new JitProtoChangeDetector(_registry);
   }
 }