Cleanup changelog for 1.12

CHANGELOG.md

 ## 1.13.0
 
 * `dart:core`
   * `Uri` added `removeFragment` method.
   * `String.allMatches` (implementing `Pattern.allMatches`) is now lazy,
     as all `allMatches` implementations are intended to be.
+
 * `dart:io`
   * `HttpClient` no longer sends URI fragments in the requeust. This is not
     allowed by the HTTP protocol.
     The `HttpServer` still gracefully receives fragments, but discards them
     before delivering the request.
-* `dart:async`
-  * `StreamController` added getters for the `onListen`, `onPause`, `onResume`
-    and `onCancel` callbacks.
-
 
 ## 1.12.0
 
 ### Core library changes
 
 * `dart:async`
   * `StreamController` added setters for the `onListen`, `onPause`, `onResume`
     and `onCancel` callbacks.
 
 * `dart:convert`
   * `LineSplitter` added a `split` static method returning an `Iterable`.
 
 * `dart:core`
   * `Uri` class now perform path normalization when a URI is created.
     This removes most `..` and `.` sequences from the URI path.
     Purely relative paths (no scheme or authority) are allowed to retain
     some leading "dot" segments.
     Also added `hasAbsolutePath`, `hasEmptyPath`, and `hasScheme` properties.
 
+* `dart:developer`
+  * New `log` function to transmit logging events to Observatory.
+
 * `dart:html`
   * `NodeTreeSanitizer` added the `const trusted` field. It can be used
     instead of defining a `NullTreeSanitizer` class when calling
     `setInnerHtml` or other methods that create DOM from text. It is
     also more efficient, skipping the creation of a `DocumentFragment`.
 
 * `dart:io`
   * Added two new file modes, `WRITE_ONLY` and `WRITE_ONLY_APPEND` for
     opening a file write only.
     [eaeecf2](https://github.com/dart-lang/sdk/commit/eaeecf2ed13ba6c7fbfd653c3c592974a7120960)
   * Change stdout/stderr to binary mode on Windows.
     [4205b29](https://github.com/dart-lang/sdk/commit/4205b2997e01f2cea8e2f44c6f46ed6259ab7277)
 
 * `dart:isolate`
   * Added `onError`, `onExit` and `errorsAreFatal` parameters to
     `Isolate.spawnUri`.
 
 * `dart:mirrors`
   * `InstanceMirror.delegate` moved up to `ObjectMirror`.
   * Fix InstanceMirror.getField optimization when the selector is an operator.
   * Fix reflective NoSuchMethodErrors to match their non-reflective
     counterparts when due to argument mismatches. (VM only)
 
-* `dart:developer`
-  * New `log` function to transmit logging events to Observatory.
+### Tool changes
 
-### Tool changes
+* Documentation tools
+
+  * `dartdoc` is now the default tool to generate static HTML for API docs.
+    [Learn more](https://pub.dartlang.org/packages/dartdoc).
+
+  * `docgen` and `dartdocgen` have been deprecated. Currently plan is to remove
+    them in 1.13.
+
+* Formatter (`dartfmt`)
+
+  * Over 50 bugs fixed.
+
+  * Optimized line splitter is much faster and produces better output on
+    complex code.
+
+* Observatory
+  * Allocation profiling.
+
+  * New feature to display output from logging.
+
+  * Heap snapshot analysis works for 64-bit VMs.
+
+  * Improved ability to inspect typed data, regex and compiled code.
+
+  * Ability to break on all or uncaught exceptions from Observatory's debugger.
+
+  * Ability to set closure-specific breakpoints.
+
+  * 'anext' - step past await/yield.
+
+  * Preserve when a variable has been expanded/unexpanded in the debugger.
+
+  * Keep focus on debugger input box whenever possible.
+
+  * Echo stdout/stderr in the Observatory debugger.  Standalone-only so far.
+
+  * Minor fixes to service protocol documentation.
 
 * Pub
 
   * **Breaking:** various commands that previously ran `pub get` implicitly no
     longer do so. Instead, they merely check to make sure the ".packages" file
     is newer than the pubspec and the lock file, and fail if it's not.
 
   * Added support for `--verbosity=error` and `--verbosity=warning`.
 
   * `pub serve` now collapses multiple GET requests into a single line of
@@ skipping 46 matching lines @@
       (such as the built-in `$dart2js` transformer) has been fixed.
 
     * A stack overflow caused by a transformer being run multiple times on the
       package that defines it has been fixed.
 
     * A transformer that tries to read a non-existent asset in another package
       will now be re-run if that asset is later created.
 
 [package spec proposal]: https://github.com/lrhn/dep-pkgspec
 
-* Formatter (`dartfmt`)
-
-  * Over 50 bugs fixed.
-
-  * Optimized line splitter is much faster and produces better output on
-    complex code.
-
-* Observatory
-  * Allocation profiling.
-  * New feature to display output from logging.
-  * Heap snapshot analysis works for 64-bit VMs.
-  * Improved ability to inspect typed data, regex and compiled code.
-  * Ability to break on all or uncaught exceptions from Observatory's debugger.
-  * Ability to set closure-specific breakpoints.
-  * 'anext' - step past await/yield.
-  * Preserve when a variable has been expanded/unexpanded in the debugger.
-  * Keep focus on debugger input box whenever possible.
-  * Echo stdout/stderr in the Observatory debugger.  Standalone-only so far.
-  * Minor fixes to service protocol documentation.
-
-* dartdocgen and docgen
-  * Deprecated in favor of dartdoc (see below). Currently plan is to remove
-    dartdocgen in 1.13.
-
-* dartdoc
-  * New tool to generate static HTML for API docs.
-    [Learn more](https://pub.dartlang.org/packages/dartdoc).
-
-
 ### VM Service Protocol Changes
 
 * **BREAKING** The service protocol now sends JSON-RPC 2.0-compatible
   server-to-client events. To reflect this, the service protocol version is
   now 2.0.
 
 * The service protocol now includes a `"jsonrpc"` property in its responses, as
   opposed to `"json-rpc"`.
 
 * The service protocol now properly handles requests with non-string ids.
@@ skipping 353 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.