Rename the package to "test".

CHANGELOG.md

+### 0.12.0-beta.2
+
+* Rename the package to `test`. The `unittest` package will continue to exist
+  through the `0.12.0` cycle, but it's deprecated and will just export the
+  `test` package.
+
 ### 0.12.0-beta.1
 
 * Add a `--name` (shorthand `-n`) flag to the test runner for selecting which
   test to run.
 
 * Ensure that `print()` in tests always prints on its own line.
 
 * Forward `print()`s from browser tests to the command-line reporter.
 
 * Add a missing dependency on `string_scanner`.
 
 ## 0.12.0-beta.0
 
 * Added support for a test runner, which can be run via `pub run
-  unittest:unittest`. By default it runs all files recursively in the `test/`
+  test:test`. By default it runs all files recursively in the `test/`
   directory that end in `_test.dart` and aren't in a `packages/` directory.
 
 * As part of moving to a runner-based model, most test configuration is moving
   out of the test file and into the runner. As such, many ancillary APIs are
   stubbed out and marked as deprecated. They still exist to make adoption
   easier, but they're now no-ops and will be removed before the stable 0.12.0
   release. These APIs include `skip_` and `solo_` functions, `Configuration` and
-  all its subclasses, `TestCase`, `TestFunction`, `unittestConfiguration`,
+  all its subclasses, `TestCase`, `TestFunction`, `testConfiguration`,
   `formatStacks`, `filterStacks`, `groupSep`, `logMessage`, `testCases`,
   `BREATH_INTERVAL`, `currentTestCase`, `PASS`, `FAIL`, `ERROR`, `filterTests`,
   `runTests`, `ensureInitialized`, `setSoloTest`, `enableTest`, `disableTest`,
   and `withTestEnvironment`.
 
 * Removed `FailureHandler`, `DefaultFailureHandler`,
   `configureExpectFailureHandler`, and `getOrCreateExpectFailureHandler` which
   used to be exported from the `matcher` package. They existed to enable
-  integration between `unittest` and `matcher` that has been streamlined.
+  integration between `test` and `matcher` that has been streamlined.
 
-* Moved a number of APIs from `matcher` into `unittest`, including:
+* Moved a number of APIs from `matcher` into `test`, including:
   `completes`, `completion`, `ErrorFormatter`, `expect`,`fail`, `prints`,
   `TestFailure`, `Throws`, and all of the `throws` methods.
 
     * `expect` no longer has a named `failureHandler` argument.
 
     * `expect` added an optional `formatter` argument.
 
     * `completion` argument `id` renamed to `description`.
 
 * Removed several members from `SimpleConfiguration` that relied on removed
@@ skipping 103 matching lines @@
 * **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.