Changelog tweaks

CHANGELOG.md

 ## 1.19.0
 
 ### Language changes
 
 * The language now allows a trailing comma after the last argument of a call and
  the last parameter of a function declaration. This can make long argument or
  parameter lists easier to maintain, as commas can be left as-is when
  reordering lines. For details, see SDK issue
  [26644](https://github.com/dart-lang/sdk/issues/26644).
 
-### Core library changes
+### Tool Changes
 
-* `dart:io`
-  * `Socket.connect` with source-address argument is now non-blocking
-    on Mac. Was already non-blocking on all other platforms.
-  * Report a better error when a bind fails because of a bad source address.
-  * Handle HTTP header `charset` parameter with empty value.
+* `dartfmt` - upgraded to v0.2.9+1
+  * Support trailing commas in argument and parameter lists.
+  * Gracefully handle read-only files.
+  * About a dozen other bug fixes.
+
+* Pub
+  * Added the ability for packages to declare a constraint on the [Flutter][]
+    SDK:
+
+    ```yaml
+    environment:
+      flutter: ^0.1.2
+      sdk: >=1.19.0 <2.0.0
+    ```
+
+    A Flutter constraint will only be satisfiable when pub is running in the
+    context of the `flutter` executable, and when the Flutter SDK version
+    matches the constraint.
+
+  * Added `sdk` as a new package source that fetches packages from a hard-coded
+    SDK. Currently only the `flutter` SDK is supported:
+
+    ```yaml
+    dependencies:
+      flutter_driver:
+        sdk: flutter
+        version: ^0.0.1
+    ```
+
+    A Flutter `sdk` dependency will only be satisfiable when pub is running in
+    the context of the `flutter` executable, and when the Flutter SDK contains a
+    package with the given name whose version matches the constraint.
+
+  * `tar` files on Linux are now created with `0` as the user and group IDs.
+    This fixes a crash when publishing packages while using Active Directory.
+
+  * Fixed a bug where packages from a hosted HTTP URL were considered the same
+    as packages from an otherwise-identical HTTPS URL.
+
+  * Fixed timer formatting for timers that lasted longer than a minute.
+
+  * Eliminate some false negatives when determining whether global executables
+    are on the user's executable path.
+
+* dart2dart (aka `dart2js --output-type=dart`) has been removed (this was
+  deprecated in Dart 1.11)
+
+[Flutter]: https://flutter.io/
+
+### Dart VM
+
+*   The dependency on BoringSSL has been rolled forward. Going forward, builds
+    of the Dart VM including secure sockets will require a compiler with C++11
+    support. For details, see the
+    [Building wiki page](https://github.com/dart-lang/sdk/wiki/Building).
 
 ### Strong Mode
 
 *   New feature - an option to disable implicit casts
     (SDK issue [26583](https://github.com/dart-lang/sdk/issues/26583)),
     see the [documentation](https://github.com/dart-lang/dev_compiler/blob/master/doc/STATIC_SAFETY.md#disable-implicit-casts)
     for usage instructions and examples.
 
 *   New feature - an option to disable implicit dynamic
     (SDK issue [25573](https://github.com/dart-lang/sdk/issues/25573)),
@@ skipping 54 matching lines @@
     ```dart
     void test() async {
       List<int> x = await [4]; // was previously inferred
       List<int> y = await new Future.value([4]); // now inferred too
     }
     ```
 
 * Breaking change - sideways casts are no longer allowed
     (SDK issue [26120](https://github.com/dart-lang/sdk/issues/26120)).
 
-### Dart VM
-
-*   The dependency on BoringSSL has been rolled forward. Going forward, builds
-    of the Dart VM including secure sockets will require a compiler with C++11
-    support, and to link against glibc 2.16 or newer. For details, see the
-    [Building wiki page](https://github.com/dart-lang/sdk/wiki/Building).
-
-### Tool Changes
-
-* `dartfmt` - upgraded to v0.2.9
-  * Support trailing commas in argument and parameter lists.
-  * Gracefully handle read-only files.
-  * About a dozen other bug fixes.
-
-* Pub
-  * Added the ability for packages to declare a constraint on the [Flutter][]
-    SDK:
-
-        environment:
-          flutter: ^0.1.2
-          sdk: >=1.19.0 <2.0.0
-
-    A Flutter constraint will only be satisfiable when pub is running in the
-    context of the `flutter` executable, and when the Flutter SDK version
-    matches the constraint.
-
-  * Added `sdk` as a new package source that fetches packages from a hard-coded
-    SDK. Currently only the `flutter` SDK is supported:
-
-        dependencies:
-          flutter_driver:
-            sdk: flutter
-            version: ^0.0.1
-
-    A Flutter `sdk` dependency will only be satisfiable when pub is running in
-    the context of the `flutter` executable, and when the Flutter SDK contains a
-    package with the given name whose version matches the constraint.
-
-  * Added a `--no-packages-dir` flag to `pub get`, `pub upgrade`, and `pub
-    downgrade`. When this flag is passed, pub will not generate a `packages/`
-    directory, and will remove that directory and any symlinks to it if they
-    exist. Note that this replaces the unsupported `--no-package-symlinks` flag.
-
-  * `tar` files on Linux are now created with `0` as the user and group IDs.
-    This fixes a crash when publishing packages while using Active Directory.
-
-  * Fixed a bug where packages from a hosted HTTP URL were considered the same
-    as packages from an otherwise-identical HTTPS URL.
-
-  * Fixed timer formatting for timers that lasted longer than a minute.
-
-  * Eliminate some false negatives when determining whether global executables
-    are on the user's executable path.
-
-* dart2dart (aka `dart2js --output-type=dart`) has been removed (this was
-  deprecated in Dart 1.11)
-
-[Flutter]: https://flutter.io/
-
 ## 1.18.1 - 2016-08-02
 
 Patch release, resolves two issues and improves performance:
 
 * Debugger: Fixes a bug that crashes the VM
 (SDK issue [26941](https://github.com/dart-lang/sdk/issues/26941))
 
 * VM: Fixes an optimizer bug involving closures, try, and await
 (SDK issue [26948](https://github.com/dart-lang/sdk/issues/26948))
 
@@ skipping 1039 matching lines @@
     they will keep the Dart process alive until they time out. This fixes the
     handling of persistent connections. Previously, the client would shut down
     immediately after a request.
 
   * **Breaking change:** `HttpServer` no longer compresses all traffic by
     default. The new `autoCompress` property can be set to `true` to re-enable
     compression.
 
 * `dart:isolate`: `Isolate.spawnUri` added the optional `packageRoot` argument,
   which controls how it resolves `package:` URIs.