Update CHANGELOG

CHANGELOG.md

Index: CHANGELOG.md
diff --git a/CHANGELOG.md b/CHANGELOG.md
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@@ -8,18 +8,21 @@
   release mode. In checked mode, the modification check is still as eager
   as possible.
   [r45198](https://code.google.com/p/dart/source/detail?r=45198),
-* Update experimental Isolate API:
-  - Make priority parameters of `Isolate.ping` and `Isolate.kill` methods
 * `dart:core`
   * Add `unmodifiable` constructor to `List` -
     [r45334](https://code.google.com/p/dart/source/detail?r=45334)
-* `dart:isolate` *Experimental*
-  * Make the `priority` parameter of `Isolate.ping` and `Isolate.kill` methods
-    a named parameter.
+  * Add `unmodifiable` constructor to `Map` -
+    [r45733](https://code.google.com/p/dart/source/detail?r=45733)
+  * Add `empty` constructor to `Iterable` -
+    [dcf0286f](https://github.com/dart-lang/sdk/commit/dcf0286f5385187a68ce9e66318d3bf19abf454b)
+* `dart:isolate`:
+  * Make the priority parameter of `Isolate.ping` and `Isolate.kill` methods
+    a named parameter named `priority`.
   * Remove the `Isolate.AS_EVENT` priority.
   * Add extra `response` parameter to `Isolate.ping` and
     `Isolate.addOnExitListener` -
     [r45092](https://code.google.com/p/dart/source/detail?r=45092)
+  * Remove the experimental state of the API.
 
 ### Tool changes