Restore files deleted in merge
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
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+++ b/.github/workflows/ci.yml
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+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
+name: ci
+
+on:
+ push:
+ branches: [ master ]
+ pull_request:
+ branches: [ master ]
+
+jobs:
+ analyze:
+ runs-on: ubuntu-latest
+
+ steps:
+ - uses: actions/checkout@v2
+ - uses: dart-lang/setup-dart@v1.0
+ with:
+ sdk: dev
+ - run: pub get
+ - run: dart format --output=none --set-exit-if-changed .
+ - run: dart analyze --fatal-infos
+ test:
+ runs-on: ubuntu-latest
+ strategy:
+ matrix:
+ sdk: [2.12.0, stable, dev]
+ steps:
+ - uses: actions/checkout@v2
+ - uses: dart-lang/setup-dart@v1.0
+ with:
+ sdk: ${{ matrix.sdk }}
+ - run: pub get
+ - run: pub run test -p vm,chrome
diff --git a/.gitignore b/.gitignore
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--- /dev/null
+++ b/.gitignore
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+# Files and directories created by pub
+.dart_tool/
+.packages
+.pub/
+packages
+pubspec.lock
+
+# Directory created by dartdoc
+doc/api/
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
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index 0000000..6f5e0ea
--- /dev/null
+++ b/CONTRIBUTING.md
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+Want to contribute? Great! First, read this page (including the small print at
+the end).
+
+### Before you contribute
+Before we can use your code, you must sign the
+[Google Individual Contributor License Agreement](https://cla.developers.google.com/about/google-individual)
+(CLA), which you can do online. The CLA is necessary mainly because you own the
+copyright to your changes, even after your contribution becomes part of our
+codebase, so we need your permission to use and distribute your code. We also
+need to be sure of various other things—for instance that you'll tell us if you
+know that your code infringes on other people's patents. You don't have to sign
+the CLA until after you've submitted your code for review and a member has
+approved it, but you must do it before we can put your code into our codebase.
+
+Before you start working on a larger contribution, you should get in touch with
+us first through the issue tracker with your idea so that we can help out and
+possibly guide you. Coordinating up front makes it much easier to avoid
+frustration later on.
+
+### Code reviews
+All submissions, including submissions by project members, require review.
+
+### File headers
+All files in the project must start with the following header.
+
+ // Copyright (c) 2015, 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.
+
+### The small print
+Contributions made by corporations are covered by a different agreement than the
+one above, the
+[Software Grant and Corporate Contributor License Agreement](https://developers.google.com/open-source/cla/corporate).
