pkg/unittest: using matcher and mock from packages

pkg/unittest/CHANGELOG.md

 # Changelog - unittest
 
 ##0.10.1-dev
 
-* `equals` now allows a nested matcher as an expected list element or map value when doing deep matching.
+* **DEPRECATED**
+    * `matcher.dart` and `mirror_matchers.dart` are now in the `matcher`
+      package.
+    * `mock.dart` is now in the `mock` package.
+* `equals` now allows a nested matcher as an expected list element or map value
+  when doing deep matching.
+* `expectAsync` and `expectAsyncUntil` now support up to 6 positional arguments
+  and correctly handle functions with optional positional arguments with default
+  values.
 
 ##0.10.0
 
 * Each test is run in a separate `Zone`. This ensures that any exceptions that
 occur is async operations are reported back to the source test case.
 * **DEPRECATED** `guardAsync`, `protectAsync0`, `protectAsync1`,
 and `protectAsync2`
     * Running each test in a `Zone` addresses the need for these methods.
 * **NEW!** `expectAsync` replaces the now deprecated `expectAsync0`,
     `expectAsync1` and `expectAsync2`
 * **NEW!** `expectAsyncUntil` replaces the now deprecated `expectAsyncUntil0`,
     `expectAsyncUntil1` and `expectAsyncUntil2`
 * `TestCase`:
     * Removed properties: `setUp`, `tearDown`, `testFunction`
     * `enabled` is now get-only
     * Removed methods: `pass`, `fail`, `error`
 * `interactive_html_config.dart` has been removed.
 * `runTests`, `tearDown`, `setUp`, `test`, `group`, `solo_test`, and
   `solo_group` now throw a `StateError` if called while tests are running.
 * `rerunTests` has been removed.
 
 ##0.9.3 - 2014-01-13