diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e979170
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,17 @@
+# Don’t commit the following directories created by pub.
+.pub
+build/
+packages
+
+# Or the files created by dart2js.
+*.dart.js
+*.dart.precompiled.js
+*.js_
+*.js.deps
+*.js.map
+*.sw?
+.idea/
+.pub/
+
+# Include when developing application packages.
+pubspec.lock
diff --git a/.status b/.status
new file mode 100644
index 0000000..b277767
--- /dev/null
+++ b/.status
@@ -0,0 +1,23 @@
+# Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+# for details. All rights reserved. Use of this source code is governed by a
+# BSD-style license that can be found in the LICENSE file.
+
+# Don't run any test-like files that show up in packages directories. It
+# shouldn't be necessary to run "pub install" in these packages, but if you do
+# it shouldn't break the tests.
+*/packages/*/*: Skip
+*/*/packages/*/*: Skip
+*/*/*/packages/*/*: Skip
+*/*/*/*/packages/*/*: Skip
+*/*/*/*/*/packages/*/*: Skip
+
+build/*: Skip  # nothing requires pub-build
+
+[ $compiler == none && ($runtime == dartium || $runtime == ContentShellOnAndroid) ]
+web_components/test/interop_test: Pass, RuntimeError # Issue 18931
+
+[ $compiler == dart2js && $csp && $runtime == drt ]
+web_components/test/interop_test: Fail # Issue 19329
+
+[ $runtime == vm || $runtime == d8 || $runtime == jsshell ]
+web_components/test/*: Skip # uses dart:html
diff --git a/codereview.settings b/codereview.settings
new file mode 100644
index 0000000..39ffa4f
--- /dev/null
+++ b/codereview.settings
@@ -0,0 +1,3 @@
+CODE_REVIEW_SERVER: http://codereview.chromium.org/
+VIEW_VC: https://github.com/dart-lang/core-elements/commit/
+CC_LIST: reviews@dartlang.org
diff --git a/pubspec.yaml b/pubspec.yaml
index abfc43f..e307b69 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -9,5 +9,7 @@
   standard tag. Shadow DOM is designed to provide encapsulation for custom
   elements, by hiding DOM subtrees under shadow roots. HTML Imports let authors
   bundle code and HTML as if they were libraries.
+dev_dependencies:
+  unittest: '>0.11.0 <0.12.0'
 environment:
   sdk: ">=1.4.0-dev.6.6 <2.0.0"