format and improve changelog

CHANGELOG.md

 ## 1.11.0
 
 ### Core library changes
 
- * Add `unmodifiable` constructor to `List` class - 
-   [r45334](https://code.google.com/p/dart/source/detail?r=45334),
-* Update experimental Isolate API:
-  - Make priorty 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.
-  - 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 `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)
 
-## 1.10.0
+## 1.10.0 – 2015-04-29
 
 ### Core library changes
 
-* Fix behavior of `HtmlEscape` in `dart:convert`. It no longer escapes
-  no-break space (U+00A0) anywhere or forward slash ('/', U+002F) in element
-  context. Slash is still escaped in the "unknown" context.
+* `dart:convert`
+  * Fix behavior of `HtmlEscape`. It no longer escapes
+  no-break space (U+00A0) anywhere or forward slash (`/`, `U+002F`) in element
+  context. Slash is still escaped using `HtmlEscapeMode.UNKNOWN`.
   [r45003](https://code.google.com/p/dart/source/detail?r=45003),
   [r45153](https://code.google.com/p/dart/source/detail?r=45153),
   [r45189](https://code.google.com/p/dart/source/detail?r=45189)
 
-* dart:html: CssClassSet method arguments must now be 'tokens', i.e. non-empty
+* `dart:core`
+  * `Uri.parse` added `start` and `end` positional arguments.
+
+* `dart:html`
+  * `CssClassSet` method arguments must now be 'tokens', i.e. non-empty
   strings with no white-space characters. The implementation was incorrect for
   class names containing spaces. The fix is to forbid spaces and provide a
   faster implementation.
   [r44898](https://code.google.com/p/dart/source/detail?r=44898),
   [r45307](https://code.google.com/p/dart/source/detail?r=45307)
 
-## 1.9.3 (2015-04-14)
+## 1.9.3 – 2015-04-14
 
 This is a bug fix release which merges a number of commits from `bleeding_edge`.
 
 * dart2js: Addresses as issue with minified Javascript output with CSP enabled -
   [r44453](https://code.google.com/p/dart/source/detail?r=44453)
 
 * Editor: Fixes accidental updating of files in the pub cache during rename
   refactoring - [r44677](https://code.google.com/p/dart/source/detail?r=44677)
 
 * Editor: Fix for
   [issue 23032](https://code.google.com/p/dart/issues/detail?id=23032)
   regarding skipped breakpoints on Windows -
   [r44824](https://code.google.com/p/dart/source/detail?r=44824)
 
 * dart:mirrors: Fix `MethodMirror.source` when the method is on the first line
   in a script -
   [r44957](https://code.google.com/p/dart/source/detail?r=44957),
   [r44976](https://code.google.com/p/dart/source/detail?r=44976)
 
 * pub: Fix for
   [issue 23084](https://code.google.com/p/dart/issues/detail?id=23084):
   Pub can fail to load transformers necessary for local development -
   [r44876](https://code.google.com/p/dart/source/detail?r=44876)
 
-## 1.9.1 (2015-03-25)
+## 1.9.1 – 2015-03-25
 
 ### Language changes
 
 * Support for `async`, `await`, `sync*`, `async*`, `yield`, `yield*`, and `await
   for`. See the [the language tour][async] for more details.
 
 * Enum support is fully enabled. See [the language tour][enum] for more details.
 
 [async]: https://www.dartlang.org/docs/dart-up-and-running/ch02.html#asynchrony
 [enum]: https://www.dartlang.org/docs/dart-up-and-running/ch02.html#enums
@@ skipping 93 matching lines @@
 
   * The static getter `Isolate.current` was added.
 
   * The `Isolate` methods `addOnExitListener`, `removeOnExitListener`,
     `setErrorsFatal`, `addOnErrorListener`, and `removeOnErrorListener` now work
     on the VM.
 
   * Isolates spawned via `Isolate.spawn` now allow most objects, including
     top-level and static functions, to be sent between them.
 
-## 1.8.5 (2015-01-21)
+## 1.8.5 – 2015-01-21
 
 * Code generation for SIMD on ARM and ARM64 is fixed.
 
 * A possible crash on MIPS with newer GCC toolchains has been prevented.
 
 * A segfault when using `rethrow` was fixed ([issue 21795][]).
 
 [issue 21795]: https://code.google.com/p/dart/issues/detail?id=21795
 
-## 1.8.3 (2014-12-10)
+## 1.8.3 – 2014-12-10
 
 * Breakpoints can be set in the Editor using file suffixes ([issue 21280][]).
 
 * IPv6 addresses are properly handled by `HttpClient` in `dart:io`, fixing a
   crash in pub ([issue 21698][]).
 
 * Issues with the experimental `async`/`await` syntax have been fixed.
 
 * Issues with a set of number operations in the VM have been fixed.
 
 * `ListBase` in `dart:collection` always returns an `Iterable` with the correct
   type argument.
 
 [issue 21280]: https://code.google.com/p/dart/issues/detail?id=21280
 [issue 21698]: https://code.google.com/p/dart/issues/detail?id=21698
 
-## 1.8.0 (2014-11-28)
+## 1.8.0 – 2014-11-28
 
 * `dart:collection`: `SplayTree` added the `toSet` function.
 
 * `dart:convert`: The `JsonUtf8Encoder` class was added.
 
 * `dart:core`:
 
   * The `IndexError` class was added for errors caused by an index being outside
     its expected range.
 
@@ skipping 20 matching lines @@
     `RawSecureSocket.secureServer`, and `RawSecureServerSocket.bind` added a
     `supportedProtocols` named argument for protocol negotiation.
 
   * `RawSecureServerSocket` added a `supportedProtocols` field.
 
   * `RawSecureSocket` and `SecureSocket` added a `selectedProtocol` field which
     contains the protocol selected during protocol negotiation.
 
 [alpn]: https://tools.ietf.org/html/rfc7301
 
-## 1.7.0 (2014-10-15)
+## 1.7.0 – 2014-10-15
 
 ### Tool changes
 
 * `pub` now generates binstubs for packages that are globally activated so that
   they can be put on the user's `PATH` and used as normal executables. See the
   [`pub global activate` documentation][pub global activate].
 
 * When using `dart2js`, deferred loading now works with multiple Dart apps on
   the same page.
 
@@ skipping 11 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.