Remove unused dart:async import. (#134)

Since this version doesn't support Dart 2.0, this import is not
necessary.
1 file changed
tree: 6847efb9a9dfc38e14197e7eece7b48a20cb8405
  1. .gitignore
  2. .test_config
  3. .travis.yml
  4. AUTHORS
  5. CHANGELOG.md
  6. CONTRIBUTING.md
  7. LICENSE
  8. README.md
  9. analysis_options.yaml
  10. lib/
  11. pubspec.yaml
  12. test/
README.md

Contains utility classes in the style of dart:async to work with asynchronous computations.