include a copy of old matcher

R=nweiz@google.com

Review URL: https://codereview.chromium.org//1135653004
36 files changed
tree: cdd0ab2a8fe8d5697692e2e1277c7ac03eb8de3c
  1. lib/
  2. test/
  3. .gitignore
  4. .status
  5. CHANGELOG.md
  6. codereview.settings
  7. LICENSE
  8. pubspec.yaml
  9. README.md
README.md

The unittest package has been renamed test. It will export test's API through the 0.12.x branch, but it is deprecated and test should be used instead.